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mw-first-heading"><span class="mw-page-title-main">Spring-loaded camming device</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Go to an article in another language. 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i{font-style:normal}.mw-parser-output .hatnote+link+.hatnote{margin-top:-0.5em}@media print{body.ns-0 .mw-parser-output .hatnote{display:none!important}}</style><div role="note" class="hatnote navigation-not-searchable">"SLCD" redirects here. For other uses, see <a href="/wiki/SLCD_(disambiguation)" class="mw-disambig" title="SLCD (disambiguation)">SLCD (disambiguation)</a>.</div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Klim_friends.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/b/bd/Klim_friends.jpg/220px-Klim_friends.jpg" decoding="async" width="220" height="165" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/bd/Klim_friends.jpg/330px-Klim_friends.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/bd/Klim_friends.jpg/440px-Klim_friends.jpg 2x" data-file-width="567" data-file-height="425" /></a><figcaption>A selection of spring-loaded camming devices of differing sizes</figcaption></figure> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Creeks_Giving_-_Climbing_in_Indian_Creek,_Utah_-_29.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/0/09/Creeks_Giving_-_Climbing_in_Indian_Creek%2C_Utah_-_29.jpg/220px-Creeks_Giving_-_Climbing_in_Indian_Creek%2C_Utah_-_29.jpg" decoding="async" width="220" height="330" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/09/Creeks_Giving_-_Climbing_in_Indian_Creek%2C_Utah_-_29.jpg/330px-Creeks_Giving_-_Climbing_in_Indian_Creek%2C_Utah_-_29.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/09/Creeks_Giving_-_Climbing_in_Indian_Creek%2C_Utah_-_29.jpg/440px-Creeks_Giving_-_Climbing_in_Indian_Creek%2C_Utah_-_29.jpg 2x" data-file-width="3456" data-file-height="5184" /></a><figcaption>Climbers often carry a large number of cams on traditional climbs.</figcaption></figure> <p>A <b>spring-loaded camming device</b> (also <b>SLCD</b>, <b>cam</b> or <b>friend</b>) is a piece of <a href="/wiki/Rock_climbing" title="Rock climbing">rock climbing</a> or <a href="/wiki/Mountaineering" title="Mountaineering">mountaineering</a> <a href="/wiki/Protection_(climbing)" class="mw-redirect" title="Protection (climbing)">protection</a> <a href="/wiki/Climbing_equipment" title="Climbing equipment">equipment</a>. It consists of two, three, or four <a href="/wiki/Cam_(mechanism)" title="Cam (mechanism)">cams</a> mounted on a common <a href="/wiki/Axle" title="Axle">axle</a> or two adjacent axles, so that pulling on the axle forces the cams to spread further apart. It is then attached to a <a href="/wiki/Sling_(climbing_equipment)" class="mw-redirect" title="Sling (climbing equipment)">sling</a> and <a href="/wiki/Carabiner" title="Carabiner">carabiner</a> at the end of the stem. The SLCD is used by pulling on the "trigger" (a small handle) so that the cams retract together, then inserting it into a crack or pocket in the rock and releasing the trigger to allow the cams to expand. A pull on the rope, such as that generated by a climber falling, will cause a properly placed SLCD to convert the pulling force along the stem of the unit into outwards pressure on the rock, producing massive amounts of friction and preventing the removal of the unit from the rock. Due to the large forces exerted on the rock when an SLCD is fallen on, it is very important that SLCDs are only placed in solid, strong rock.<sup id="cite_ref-freedom_1-0" class="reference"><a href="#cite_note-freedom-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="History">History</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Spring-loaded_camming_device&action=edit&section=1" title="Edit section: History"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p><a href="/wiki/Vitaly_Mikhaylovich_Abalakov" class="mw-redirect" title="Vitaly Mikhaylovich Abalakov">Vitaly Abalakov</a>'s invention of the Abalakov Cam was the first application to climbing of the principle of a cam to climbing equipment. His cams were sections cut out of a pulley wheel and bear a remarkable resemblance to today's <a href="/wiki/Tricam" title="Tricam">tricams</a>. Since these shapes were eccentric, the intercept angle of the cam changed as the cam rotates and expands. </p><p>In 1973, <a href="/wiki/Greg_Lowe" title="Greg Lowe">Greg Lowe</a> filed for a patent for a cam that had a "constant intercept" angle. Using a <a href="/wiki/Logarithmic_spiral" title="Logarithmic spiral">logarithmic spiral</a><sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> shape resulted in a uniform angle between the rock and each lobe of the cam; this constant angle is designed to always provide the necessary friction to hold a cam in equilibrium.<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> Designed so that a load produces a rotational force, the logarithmic cam shape allowed for a single device to fit securely in a range of crack sizes. </p><p>Modern SLCDs were invented by <a href="/wiki/Ray_Jardine" title="Ray Jardine">Ray Jardine</a> in 1978 (US patent 4,184,657)<sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> and sold under the brand name of "Friends". Ray designed a spring-loaded opposing multiple cam unit with a more stable 13.75 <a href="/wiki/Degree_of_arc" class="mw-redirect" title="Degree of arc">degree</a> camming angle and an innovative triggering mechanism. (The term <i>friend</i> is widely used by climbers to refer to SLCDs in general, but properly speaking it refers to the brand popularized by <a href="/wiki/Mark_Vallance" title="Mark Vallance">Mark Vallance</a> and manufactured by <a href="/wiki/Wild_Country_(company)" title="Wild Country (company)">Wild Country</a>). Other popular brands include <a href="/wiki/Black_Diamond_Equipment" title="Black Diamond Equipment">Black Diamond</a> <a href="/wiki/Camalot" title="Camalot">Camalots</a>, Metolius Power Cams, DMM 4CUs, Trango FlexCams, and CCH Aliens. </p> <div class="mw-heading mw-heading2"><h2 id="Modern_use">Modern use</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Spring-loaded_camming_device&action=edit&section=2" title="Edit section: Modern use"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:Camalot_number_6.JPG" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/f/f7/Camalot_number_6.JPG/220px-Camalot_number_6.JPG" decoding="async" width="220" height="165" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/f7/Camalot_number_6.JPG/330px-Camalot_number_6.JPG 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/f7/Camalot_number_6.JPG/440px-Camalot_number_6.JPG 2x" data-file-width="2592" data-file-height="1944" /></a><figcaption>Use of a cam in a large crack</figcaption></figure> <p>The invention of SLCDs revolutionized rock climbing because it meant that parallel and flaring cracks could be easily protected. Furthermore, unlike <a href="/wiki/Piton" title="Piton">pitons</a>, SLCDs can be removed easily without causing damage to the rock, which made <a href="/wiki/Clean_climbing" title="Clean climbing">clean climbing</a> (climbing without damaging the rock) practical on many more climbs. Since the invention of the Technical Friend (that replaces the original one-piece <a href="/wiki/Machining" title="Machining">machined</a> alloy shaft with a <a href="/wiki/Brazing" title="Brazing">brazed</a> assembly incorporating a length of thick <a href="/wiki/Stainless-steel" class="mw-redirect" title="Stainless-steel">stainless-steel</a> cable, which is better able to cope with loading over an edge), there has been a great deal of development of the SLCD by a variety of manufacturers. For example, the adoption of the dual axle design by Black Diamond, the invention of three-lobed camming units to fit smaller cracks, and the more recent invention of the Link Cam by Omega Pacific, a design that allows one SLCD to span an even larger range of crack sizes. SLCDs are sold in various sizes to fit a diverse range of cracks from about 6–300 millimetres (0.2–10 in) wide, though devices of below about 10 millimetres (0.4 in) or above about 100 millimetres (4 in) are not often seen. To fit non-parallel cracks, there are SLCDs with asymmetrical "offset" cams and devices that expand the lobes independently (Totem Cam). </p><p><a href="/wiki/Traditional_climbing" title="Traditional climbing">Traditional climbers</a> frequently climb with numerous and variously sized SLCDs to cover a wide range of crack sizes, often having multiples of the same size, depending on the protection requirements of the climb. Some popular climbing areas like <a href="/wiki/Indian_Creek_(climbing_area)" title="Indian Creek (climbing area)">Indian Creek, UT</a> have extremely consistent feature sizes that require climbers to carry double-digit numbers of the same size SLCDs to properly protect a route. </p> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Spring-loaded_camming_device&action=edit&section=3" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist"> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-freedom-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-freedom_1-0">^</a></b></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite id="CITEREFCox,_Steven_M.Kris_Fulsaas2003" class="citation book cs1">Cox, Steven M.; Kris Fulsaas, eds. (2003). <i><a href="/wiki/Mountaineering:_The_Freedom_of_the_Hills" title="Mountaineering: The Freedom of the Hills">Mountaineering: The Freedom of the Hills</a></i> (7 ed.). Seattle: The Mountaineers. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/0-89886-828-9" title="Special:BookSources/0-89886-828-9"><bdi>0-89886-828-9</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Mountaineering%3A+The+Freedom+of+the+Hills&rft.place=Seattle&rft.edition=7&rft.pub=The+Mountaineers&rft.date=2003&rft.isbn=0-89886-828-9&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASpring-loaded+camming+device" class="Z3988"></span></span> </li> <li id="cite_note-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-2">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFMatt_Samet2011" class="citation book cs1">Matt Samet (2011). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=jpcXCRMyDGwC&q=Abalakov+Cam&pg=PA44"><i>The Climbing Dictionary: Mountaineering Slang, Terms, Neologisms & Lingo: An Illustrated Reference</i></a>. The Mountaineers Books. p. 44. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-594-85503-0" title="Special:BookSources/978-1-594-85503-0"><bdi>978-1-594-85503-0</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+Climbing+Dictionary%3A+Mountaineering+Slang%2C+Terms%2C+Neologisms+%26+Lingo%3A+An+Illustrated+Reference&rft.pages=44&rft.pub=The+Mountaineers+Books&rft.date=2011&rft.isbn=978-1-594-85503-0&rft.au=Matt+Samet&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DjpcXCRMyDGwC%26q%3DAbalakov%2BCam%26pg%3DPA44&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASpring-loaded+camming+device" class="Z3988"></span></span> </li> <li id="cite_note-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-3">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://www.duke.edu/~mak25/research.html">Duke SLCD research</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20081025052215/http://www.duke.edu/~mak25/research.html">Archived</a> 2008-10-25 at the <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a> retrieved (2009-08-05)</span> </li> <li id="cite_note-4"><span class="mw-cite-backlink"><b><a href="#cite_ref-4">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFJardine1980" class="citation cs2">Jardine, Raymond D. (1980-01-22), <a rel="nofollow" class="external text" href="http://patft.uspto.gov/netacgi/nph-Parser?Sect2=PTO1&Sect2=HITOFF&p=1&u=%2Fnetahtml%2Fsearch-bool.html&r=1&f=G&l=50&d=PALL&RefSrch=yes&Query=PN%2F4184657"><i>United States Patent: 4184657 - Climbing aids</i></a><span class="reference-accessdate">, retrieved <span class="nowrap">2009-12-21</span></span></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=United+States+Patent%3A+4184657+-+Climbing+aids&rft.date=1980-01-22&rft.aulast=Jardine&rft.aufirst=Raymond+D.&rft_id=http%3A%2F%2Fpatft.uspto.gov%2Fnetacgi%2Fnph-Parser%3FSect2%3DPTO1%26Sect2%3DHITOFF%26p%3D1%26u%3D%252Fnetahtml%252Fsearch-bool.html%26r%3D1%26f%3DG%26l%3D50%26d%3DPALL%26RefSrch%3Dyes%26Query%3DPN%252F4184657&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASpring-loaded+camming+device" class="Z3988"></span></span> </li> </ol></div></div> <div class="mw-heading mw-heading2"><h2 id="External_links">External 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class="side-box-image"><span class="noviewer" typeof="mw:File"><a href="/wiki/File:Commons-logo.svg" class="mw-file-description"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/30px-Commons-logo.svg.png" decoding="async" width="30" height="40" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/45px-Commons-logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/59px-Commons-logo.svg.png 2x" data-file-width="1024" data-file-height="1376" /></a></span></div> <div class="side-box-text plainlist">Wikimedia Commons has media related to <span style="font-weight: bold; font-style: italic;"><a href="https://commons.wikimedia.org/wiki/Category:Spring-loaded_camming_devices" class="extiw" title="commons:Category:Spring-loaded camming devices">Spring-loaded camming devices</a></span>.</div></div> </div> <ul><li><a rel="nofollow" class="external text" href="http://web.mit.edu/custer/www/rocking/cams/cams.body.html">Elastic Model of SLCD Holding Power</a></li> <li><a rel="nofollow" class="external text" href="http://www.vainokodas.com/climbing/cams.html">Engineering Principles Used in the Design of Camming Devices</a></li></ul> <div class="navbox-styles"><style data-mw-deduplicate="TemplateStyles:r1129693374">.mw-parser-output .hlist dl,.mw-parser-output .hlist ol,.mw-parser-output .hlist ul{margin:0;padding:0}.mw-parser-output .hlist dd,.mw-parser-output .hlist dt,.mw-parser-output .hlist li{margin:0;display:inline}.mw-parser-output .hlist.inline,.mw-parser-output .hlist.inline dl,.mw-parser-output .hlist.inline ol,.mw-parser-output .hlist.inline ul,.mw-parser-output .hlist dl dl,.mw-parser-output .hlist dl ol,.mw-parser-output .hlist dl ul,.mw-parser-output .hlist ol dl,.mw-parser-output .hlist ol ol,.mw-parser-output .hlist ol ul,.mw-parser-output .hlist ul dl,.mw-parser-output .hlist ul ol,.mw-parser-output .hlist ul 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style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Aid_climbing" title="Aid climbing">Aid</a></li> <li><a href="/wiki/Big_wall_climbing" title="Big wall climbing">Big wall</a> <ul><li><a href="/wiki/Multi-pitch_climbing" title="Multi-pitch climbing">Multi-pitch</a></li></ul></li> <li><a href="/wiki/Bouldering" title="Bouldering">Bouldering</a> <ul><li><a href="/wiki/Bouldering#Highball_bouldering" title="Bouldering">Highball</a></li></ul></li> <li><a href="/wiki/Competition_climbing" title="Competition climbing">Competition</a> <ul><li><a href="/wiki/Speed_climbing" title="Speed climbing">Speed</a></li></ul></li> <li><a href="/wiki/Free_climbing" title="Free climbing">Free</a> <ul><li><a href="/wiki/Sport_climbing" title="Sport climbing">Sport</a></li> <li><a href="/wiki/Traditional_climbing" title="Traditional climbing">Traditional</a></li></ul></li> <li><a href="/wiki/Solo_climbing" title="Solo climbing">Solo</a> <ul><li><a href="/wiki/Free_solo_climbing" title="Free solo climbing">Free solo</a></li> <li><a href="/wiki/Deep-water_soloing" title="Deep-water soloing">Deep-water solo</a></li> <li><a href="/wiki/Rope_solo_climbing" title="Rope solo climbing">Rope solo</a></li></ul></li> <li><a href="/wiki/Top_rope_climbing" title="Top rope climbing">Top roping</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Rock_climbing#Types_of_routes" title="Rock climbing">Route types</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Climbing_wall" title="Climbing wall">Artificial</a></li> <li><a href="/wiki/Crack_climbing" title="Crack climbing">Crack</a></li> <li><a href="/wiki/Face_climbing" title="Face climbing">Face</a></li> <li><a href="/wiki/Overhang_(climbing)" title="Overhang (climbing)">Overhang / Roof</a></li> <li><a href="/wiki/Slab_climbing" title="Slab climbing">Slab</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Mountaineering" title="Mountaineering">Mountaineering</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Alpine_climbing" title="Alpine climbing">Alpine</a> <ul><li><a href="/wiki/Via_ferrata" title="Via ferrata">Via ferrata</a></li></ul></li> <li><a href="/wiki/Eight-thousander" title="Eight-thousander">Himalayan</a> <ul><li><a href="/wiki/Alpine_style" class="mw-redirect" title="Alpine style">Alpine style</a></li> <li><a href="/wiki/Expedition_climbing" title="Expedition climbing">Expedition style</a></li></ul></li> <li><a href="/wiki/Ice_climbing" title="Ice climbing">Ice</a> <ul><li><a href="/wiki/Mixed_climbing" title="Mixed climbing">Mixed</a></li> <li><a href="/wiki/Dry-tooling" title="Dry-tooling">Dry-tooling</a></li></ul></li> <li><a href="/wiki/Scrambling" title="Scrambling">Scrambling</a> <ul><li><a href="/wiki/Hillwalking" class="mw-redirect" title="Hillwalking">Hillwalking</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Other</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Buildering" title="Buildering">Buildering</a></li> <li><a href="/wiki/Canyoning" title="Canyoning">Canyoning</a></li> <li><a href="/wiki/Crane_climbing" title="Crane climbing">Crane</a></li> <li><a href="/wiki/Grass_climbing" title="Grass climbing">Grass</a></li> <li><a href="/wiki/Rope_access" title="Rope access">Commercial</a></li> <li><a href="/wiki/Parkour" title="Parkour">Parkour</a></li> <li><a href="/wiki/Pole_climbing" title="Pole climbing">Pole</a></li> <li><a href="/wiki/Ropes_course" title="Ropes course">Ropes course</a></li> <li><a href="/wiki/Rooftopping" title="Rooftopping">Rooftopping</a></li> <li><a href="/wiki/Roof_and_tunnel_hacking" title="Roof and tunnel hacking">Roof and tunnel hacking</a></li> <li><a href="/wiki/Slide_Climbing" class="mw-redirect" title="Slide Climbing">Slide</a></li> <li><a href="/wiki/Tree_climbing" title="Tree climbing">Tree</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Lists</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/List_of_alpine_clubs" title="List of alpine clubs">Alpine clubs</a></li> <li><a href="/wiki/List_of_climbers_and_mountaineers" title="List of climbers and mountaineers">Climbers</a> <ul><li><a href="/wiki/Piolet_d%27Or" class="mw-redirect" title="Piolet d'Or">Piolet d'Or winners</a></li> <li><a href="/wiki/IFSC_Climbing_World_Cup" title="IFSC Climbing World Cup">IFSC World Cup winners</a></li> <li><a href="/wiki/IFSC_Climbing_World_Championships" title="IFSC Climbing World Championships">IFSC World Championships winners</a></li> <li><a href="/wiki/Ranking_of_career_IFSC_victories_by_climber" title="Ranking of career IFSC victories by climber">IFSC victories</a></li></ul></li> <li>Deaths <ul><li><a href="/wiki/List_of_deaths_on_eight-thousanders" title="List of deaths on eight-thousanders">Eight-thousanders</a></li> <li><a href="/wiki/List_of_people_who_died_climbing_Mount_Everest" title="List of people who died climbing Mount Everest">Everest</a></li></ul></li> <li><a href="/wiki/Climbing_equipment" title="Climbing equipment">Equipment</a> <ul><li><a href="/wiki/List_of_climbing_and_mountaineering_equipment_brands" title="List of climbing and mountaineering equipment brands">Brands</a></li> <li><a href="/wiki/List_of_climbing_knots" title="List of climbing knots">Knots</a></li></ul></li> <li><a href="/wiki/History_of_rock_climbing" title="History of rock climbing">Historical events</a> <ul><li><a href="/wiki/List_of_grade_milestones_in_rock_climbing" title="List of grade milestones in rock climbing">Grade milestones</a></li> <li><a href="/wiki/List_of_first_ascents_of_mountain_summits" title="List of first ascents of mountain summits">First ascents</a></li></ul></li> <li><a href="/wiki/Climbing_technique" title="Climbing technique">Technique</a></li> <li><a href="/wiki/Glossary_of_climbing_terms" title="Glossary of climbing terms">Terminology</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Terminology</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Climbing_equipment" title="Climbing equipment">Equipment</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Rock-climbing_equipment" title="Rock-climbing equipment">Rock</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Aider" class="mw-redirect" title="Aider">Aider</a> <ul><li><a href="/wiki/Daisy_chain_(climbing)" class="mw-redirect" title="Daisy chain (climbing)">Daisy chain</a></li></ul></li> <li><a href="/wiki/Anchor_(climbing)" title="Anchor (climbing)">Anchor</a></li> <li><a href="/wiki/Ascender_(climbing)" title="Ascender (climbing)">Ascender</a> <ul><li><a href="/wiki/Petzl_Croll" title="Petzl Croll">Croll</a></li></ul></li> <li><a href="/wiki/Belay_device" title="Belay device">Belay device</a> <ul><li><a href="/wiki/Auto_belay" title="Auto belay">Auto belay</a></li> <li><a href="/wiki/Belay_glasses" title="Belay glasses">Glasses</a></li> <li><a href="/wiki/Belay_gloves" class="mw-redirect" title="Belay gloves">Gloves</a></li></ul></li> <li><a href="/wiki/Bolt_(climbing)" title="Bolt (climbing)">Bolt</a></li> <li><a href="/wiki/Bouldering_mat" title="Bouldering mat">Boulder mat</a></li> <li><a href="/wiki/Carabiner" title="Carabiner">Carabiner</a> <ul><li><a href="/wiki/Maillon" title="Maillon">Maillon</a></li></ul></li> <li><a href="/wiki/Climbing_rope" title="Climbing rope">Climbing rope</a> <ul><li><a href="/wiki/Cord_(climbing)" class="mw-redirect" title="Cord (climbing)">Cord</a></li> <li><a href="/wiki/Dynamic_rope" title="Dynamic rope">Dynamic</a></li> <li><a href="/wiki/Static_rope" title="Static rope">Static</a></li></ul></li> <li><a href="/wiki/Liquid_chalk" title="Liquid chalk">Chalk</a></li> <li><a href="/wiki/Descender_(climbing)" class="mw-redirect" title="Descender (climbing)">Descenders</a> <ul><li><a href="/wiki/Figure_8_(climbing)" title="Figure 8 (climbing)">Figure-8</a></li></ul></li> <li><a href="/wiki/Climbing_harness" title="Climbing harness">Harness</a></li> <li><a href="/wiki/Hook_(climbing)" class="mw-redirect" title="Hook (climbing)">Hooks</a> <ul><li><a href="/wiki/Fifi_hook" title="Fifi hook">Fifi</a></li> <li><a href="/wiki/Skyhook_(climbing)" class="mw-redirect" title="Skyhook (climbing)">Skyhook</a></li></ul></li> <li><a href="/wiki/Rock_climbing_hammer" class="mw-redirect" title="Rock climbing hammer">Hammer</a></li> <li><a href="/wiki/Hex_(climbing)" title="Hex (climbing)">Hex</a></li> <li><a href="/wiki/Lanyard_(climbing)" class="mw-redirect" title="Lanyard (climbing)">Lanyard</a> <ul><li><a href="/wiki/Personal_anchor_system" class="mw-redirect" title="Personal anchor system">PAC</a></li></ul></li> <li><a href="/wiki/Nut_(climbing)" title="Nut (climbing)">Nut</a> <ul><li><a href="/wiki/Copperhead_(climbing)" title="Copperhead (climbing)">Copperhead</a></li></ul></li> <li><a href="/wiki/Piton" title="Piton">Piton</a></li> <li><a href="/wiki/Portaledge" title="Portaledge">Portaledge</a></li> <li><a href="/wiki/Quickdraw" title="Quickdraw">Quickdraw</a></li> <li><a href="/wiki/Self-locking_device" title="Self-locking device">SLDs</a> <ul><li><a href="/wiki/Grigri" title="Grigri">Grigri</a></li> <li><a href="/wiki/Revo_(climbing)" title="Revo (climbing)">Revo</a></li></ul></li> <li><a href="/wiki/Sling_(climbing_equipment)" class="mw-redirect" title="Sling (climbing equipment)">Sling</a></li> <li><a class="mw-selflink selflink">SLCDs</a> <ul><li><a href="/wiki/Camalot" title="Camalot">Camalot</a></li></ul></li> <li><a href="/wiki/Climbing_shoe" title="Climbing shoe">Shoes</a></li> <li><a href="/wiki/Tricam" title="Tricam">Tricam</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Ice_climbing#Equipment" title="Ice climbing">Ice and snow</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Alpenstock" title="Alpenstock">Alpenstock</a></li> <li><a href="/wiki/Abalakov_thread" title="Abalakov thread">Abalakov thread</a></li> <li><a href="/wiki/Bottled_oxygen_(climbing)" class="mw-redirect" title="Bottled oxygen (climbing)">Bottled oxygen</a></li> <li><a href="/wiki/Crampons" title="Crampons">Crampons</a></li> <li><a href="/wiki/Ice_axe" title="Ice axe">Ice axe</a> <ul><li><a href="/wiki/Ice_tool" title="Ice tool">Ice tool</a></li></ul></li> <li><a href="/wiki/Ice_screw" title="Ice screw">Ice screw</a></li> <li><a href="/wiki/Mountaineering_boot" title="Mountaineering boot">Mountaineering boot</a></li> <li>Rescue <ul><li><a href="/wiki/Avalanche_cord" title="Avalanche cord">Avalanche cord</a></li> <li><a href="/wiki/RECCO" title="RECCO">RECCO</a></li> <li><a href="/wiki/Avalanche_transceiver" title="Avalanche transceiver">Transeiver</a></li></ul></li> <li><a href="/wiki/Snow_anchor" title="Snow anchor">Snow anchor</a></li> <li><a href="/wiki/Snowshoe" title="Snowshoe">Snowshoe</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Action</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Abseiling" title="Abseiling">Abseiling</a> <ul><li><a href="/wiki/Australian_rappel" title="Australian rappel">Australian</a></li> <li><a href="/wiki/D%C3%BClfersitz" title="Dülfersitz">Dülfersitz</a></li></ul></li> <li><a href="/wiki/Belaying" title="Belaying">Belaying</a></li> <li><a href="/wiki/Front_pointing" title="Front pointing">Front pointing</a></li> <li><a href="/wiki/Glissade_(climbing)" title="Glissade (climbing)">Glissading</a></li> <li><a href="/wiki/Fixed_rope" title="Fixed rope">Jumaring</a></li> <li><a href="/wiki/Lead_climbing" title="Lead climbing">Leading</a> <ul><li><a href="/wiki/Flash_(climbing)" class="mw-redirect" title="Flash (climbing)">Flashing</a></li> <li><a href="/wiki/Onsight" class="mw-redirect" title="Onsight">Onsighting</a></li> <li><a href="/wiki/Redpoint_(climbing)" title="Redpoint (climbing)">Redpointing</a></li></ul></li> <li><a href="/wiki/Mountain_rescue" title="Mountain rescue">Rescue</a> <ul><li><a href="/wiki/Crevasse_rescue" title="Crevasse rescue">Crevasse</a></li> <li><a href="/wiki/Self_rescue_(climbing)" title="Self rescue (climbing)">Self</a></li></ul></li> <li><a href="/wiki/Self-arrest" title="Self-arrest">Self-arrest</a></li> <li><a href="/wiki/Simul-climbing" title="Simul-climbing">Simul-climbing</a> <ul><li><a href="/wiki/Rope_team" title="Rope team">Rope team</a></li></ul></li> <li><a href="/wiki/Spotting_(climbing)" title="Spotting (climbing)">Spotting</a></li> <li><a href="/wiki/Traverse_(climbing)" title="Traverse (climbing)">Traversing</a> <ul><li><a href="/wiki/Tyrolean_traverse" title="Tyrolean traverse">Tyrolean</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Other</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Ape_index" title="Ape index">Ape index</a></li> <li><a href="/wiki/Approach_shoe" title="Approach shoe">Approach shoe</a></li> <li><a href="/wiki/Clean_climbing" title="Clean climbing">Clean</a></li> <li><a href="/wiki/Climbing_route" title="Climbing route">Climbing route</a> <ul><li><a href="/wiki/Beta_(climbing)" title="Beta (climbing)">Beta</a></li> <li><a href="/wiki/Climbing_guidebook" title="Climbing guidebook">Guidebook</a></li> <li><a href="/wiki/Chipping_(climbing)" title="Chipping (climbing)">Chipping</a></li> <li><a href="/wiki/First_ascent" title="First ascent">First ascent</a></li> <li><a href="/wiki/Pitch_(climbing)" title="Pitch (climbing)">Pitch</a></li> <li><a href="/wiki/Topo_(climbing)" title="Topo (climbing)">Topo</a></li></ul></li> <li><a href="/wiki/Exposure_(heights)" title="Exposure (heights)">Exposure</a></li> <li><a href="/wiki/Fall_factor" title="Fall factor">Fall factor</a></li> <li><a href="/wiki/Grade_(climbing)" title="Grade (climbing)">Grades</a></li> <li><a href="/wiki/Mountain_guide" title="Mountain guide">Guides</a></li> <li>Training <ul><li><a href="/wiki/Bachar_ladder" title="Bachar ladder">Bachar ladder</a></li> <li><a href="/wiki/Campus_board" title="Campus board">Campus board</a></li> <li><a href="/wiki/Hangboard" class="mw-redirect" title="Hangboard">Hangboard</a></li> <li><a href="/wiki/MoonBoard" class="mw-redirect" title="MoonBoard">MoonBoard</a></li></ul></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Media</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%">Magazines and journals</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><i><a href="/wiki/Alpine_Journal" title="Alpine Journal">Alpine Journal</a></i></li> <li><i><a href="/wiki/Alpinist_(magazine)" title="Alpinist (magazine)">Alpinist</a></i></li> <li><i><a href="/wiki/American_Alpine_Journal" title="American Alpine Journal">American Alpine Journal</a></i></li> <li><i><a href="/wiki/Canadian_Alpine_Journal" title="Canadian Alpine Journal">Canadian Alpine Journal</a></i></li> <li><i><a href="/wiki/Climbing_(magazine)" title="Climbing (magazine)">Climbing</a></i></li> <li><i><a href="/wiki/Desnivel" title="Desnivel">Desnivel</a></i></li> <li><i><a href="/wiki/Himalayan_Journal" title="Himalayan Journal">Himalayan Journal</a></i></li> <li><i><a href="/wiki/Planinski_Vestnik" title="Planinski Vestnik">Planinski Vestnik</a></i></li> <li><i><a href="/wiki/Rock_%26_Ice" title="Rock & Ice">Rock & Ice</a></i></li> <li><i><a href="/wiki/Summit_(magazine)" title="Summit (magazine)">Summit</a></i></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Non-fiction films</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><i><a href="/wiki/The_Alpinist" title="The Alpinist">The Alpinist</a></i></li> <li><i><a href="/wiki/El_Capitan_(film)" title="El Capitan (film)">El Capitan</a></i></li> <li><i><a href="/wiki/The_Dawn_Wall" title="The Dawn Wall">The Dawn Wall</a></i></li> <li><i><a href="/wiki/Free_Solo" title="Free Solo">Free Solo</a></i></li> <li><i><a href="/wiki/Hard_Grit" title="Hard Grit">Hard Grit</a></i></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Companies</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Black_Diamond_Equipment" title="Black Diamond Equipment">Black Diamond</a></li> <li><a href="/wiki/CAMP_(company)" title="CAMP (company)">CAMP</a></li> <li><a href="/wiki/Cascade_Designs" title="Cascade Designs">Cascade Designs</a></li> <li><a href="/wiki/Deuter_Sport" title="Deuter Sport">Deuter</a></li> <li><a href="/wiki/Early_Winters" title="Early Winters">Early Winters</a></li> <li><a href="/wiki/Eastern_Mountain_Sports" title="Eastern Mountain Sports">Eastern Mountain Sports</a></li> <li><a href="/wiki/Five_Ten_Footwear" title="Five Ten Footwear">Five Ten</a></li> <li><a href="/wiki/Frostline_Kits" title="Frostline Kits">Frostline Kits</a></li> <li><a href="/wiki/Gerry_(company)" title="Gerry (company)">GERRY Mountain Sports</a></li> <li><a href="/wiki/Grivel_(company)" title="Grivel (company)">Grivel</a></li> <li><a href="/wiki/Holubar_Mountaineering" title="Holubar Mountaineering">Holubar Mountaineering</a></li> <li><a href="/wiki/JanSport" title="JanSport">JanSport</a></li> <li><a href="/wiki/Kellwood_Company" title="Kellwood Company">Sierra Designs</a></li> <li><a href="/wiki/Kelty_(company)" title="Kelty (company)">Kelty</a></li> <li><a href="/wiki/La_Sportiva" title="La Sportiva">La Sportiva</a></li> <li><a href="/wiki/Lowe_Alpine" title="Lowe Alpine">Lowe Alpine</a></li> <li><a href="/wiki/Mammut_Sports_Group" title="Mammut Sports Group">Mammut</a></li> <li><a href="/wiki/Marmot_(company)" title="Marmot (company)">Marmot Mountain Works</a></li> <li><a href="/wiki/Millet_(manufacturer)" title="Millet (manufacturer)">Millet</a></li> <li><a href="/wiki/Mountain_Equipment_Co-op" title="Mountain Equipment Co-op">Mountain Equipment Co-op</a></li> <li><a href="/wiki/Mountain_Safety_Research" title="Mountain Safety Research">Mountain Safety Research</a></li> <li><a href="/wiki/Outdoor_Research" title="Outdoor Research">Outdoor Research</a></li> <li><a href="/wiki/Patagonia,_Inc." title="Patagonia, Inc.">Patagonia</a></li> <li><a href="/wiki/Petzl" title="Petzl">Petzl</a></li> <li><a href="/wiki/Rab_(company)" title="Rab (company)">Rab</a></li> <li><a href="/wiki/Recreational_Equipment,_Inc." class="mw-redirect" title="Recreational Equipment, Inc.">REI</a></li> <li><a href="/wiki/The_North_Face" title="The North Face">The North Face</a></li> <li><a href="/wiki/Therm-a-Rest" title="Therm-a-Rest">Therm-a-Rest</a></li> <li><a href="/wiki/Wild_Country_(company)" title="Wild Country (company)">Wild Country</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Organizations</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Climbing_clubs" class="mw-redirect" title="Climbing clubs">National</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/The_Access_Fund" title="The Access Fund">Access Fund</a></li> <li><a href="/wiki/Alpine_Club_(UK)" title="Alpine Club (UK)">Alpine Club</a></li> <li><a href="/wiki/Alpine_Club_of_Canada" title="Alpine Club of Canada">Alpine Club of Canada</a></li> <li><a href="/wiki/American_Alpine_Club" title="American Alpine Club">American Alpine Club</a></li> <li><a href="/wiki/Appalachian_Mountain_Club" title="Appalachian Mountain Club">Appalachian Mountain Club</a></li> <li><a href="/wiki/Austrian_Alpine_Club" title="Austrian Alpine Club">Austrian Alpine Club</a></li> <li><a href="/wiki/British_Mountaineering_Council" title="British Mountaineering Council">British Mountaineering Council</a></li> <li><a href="/wiki/Club_Alpin_Fran%C3%A7ais" class="mw-redirect" title="Club Alpin Français">Club Alpin Français</a></li> <li><a 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Club</a></li> <li><a href="/wiki/USA_Climbing" title="USA Climbing">USA Climbing</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">International</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/International_Federation_of_Sport_Climbing" title="International Federation of Sport Climbing">International Federation of Sport Climbing</a> (IFSC)</li> <li><a href="/wiki/International_Climbing_and_Mountaineering_Federation" title="International Climbing and Mountaineering Federation">International Climbing and Mountaineering Federation</a> (UIAA)</li> <li><a href="/wiki/UIAGM" class="mw-redirect" title="UIAGM">Union Internationale des Associations de Guides de Montagnes</a> (UIAGM)</li> <li><a href="/wiki/Union_of_International_Mountain_Leader_Associations" title="Union of International Mountain Leader Associations">Union of International Mountain Leader 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