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.geo-dms,.mw-parser-output .geo-dec{display:inline}.mw-parser-output .geo-nondefault,.mw-parser-output .geo-multi-punct,.mw-parser-output .geo-inline-hidden{display:none}.mw-parser-output .longitude,.mw-parser-output .latitude{white-space:nowrap}</style><span class="plainlinks nourlexpansion"><a class="external text" href="https://geohack.toolforge.org/geohack.php?pagename=Little_Heath_Pit&params=51.7633_N_0.5278_W_type:landmark_region:GB-BNE"><span class="geo-nondefault"><span class="geo-dms" title="Maps, aerial photos, and other data for this location"><span class="latitude">51°45′48″N</span> <span class="longitude">0°31′40″W</span></span></span><span class="geo-multi-punct"> / </span><span class="geo-default"><span class="geo-dec" title="Maps, aerial photos, and other data for this location">51.7633°N 0.5278°W</span><span style="display:none"> / <span class="geo">51.7633; -0.5278</span></span></span></a></span></span></div></div> </div> <div id="siteSub" class="noprint">From Wikipedia, the free encyclopedia</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><style data-mw-deduplicate="TemplateStyles:r1257001546">.mw-parser-output .infobox-subbox{padding:0;border:none;margin:-3px;width:auto;min-width:100%;font-size:100%;clear:none;float:none;background-color:transparent}.mw-parser-output .infobox-3cols-child{margin:auto}.mw-parser-output .infobox .navbar{font-size:100%}@media screen{html.skin-theme-clientpref-night .mw-parser-output .infobox-full-data:not(.notheme)>div:not(.notheme)[style]{background:#1f1f23!important;color:#f8f9fa}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .infobox-full-data:not(.notheme) div:not(.notheme){background:#1f1f23!important;color:#f8f9fa}}@media(min-width:640px){body.skin--responsive .mw-parser-output .infobox-table{display:table!important}body.skin--responsive .mw-parser-output .infobox-table>caption{display:table-caption!important}body.skin--responsive .mw-parser-output .infobox-table>tbody{display:table-row-group}body.skin--responsive .mw-parser-output .infobox-table tr{display:table-row!important}body.skin--responsive .mw-parser-output .infobox-table th,body.skin--responsive .mw-parser-output .infobox-table td{padding-left:inherit;padding-right:inherit}}</style><table class="infobox vcard"><caption class="infobox-title fn org">Little Heath Pit</caption><tbody><tr><td colspan="2" class="infobox-subheader category"><a href="/wiki/Site_of_Special_Scientific_Interest" title="Site of Special Scientific Interest">Site of Special Scientific Interest</a></td></tr><tr><td colspan="2" class="infobox-image"><span class="mw-default-size" typeof="mw:File/Frameless"><a href="/wiki/File:Little_Heath_Pit_2.JPG" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/3/37/Little_Heath_Pit_2.JPG/220px-Little_Heath_Pit_2.JPG" decoding="async" width="220" height="146" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/3/37/Little_Heath_Pit_2.JPG/330px-Little_Heath_Pit_2.JPG 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/3/37/Little_Heath_Pit_2.JPG/440px-Little_Heath_Pit_2.JPG 2x" data-file-width="6016" data-file-height="4000" /></a></span></td></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/List_of_Sites_of_Special_Scientific_Interest_by_Area_of_Search" title="List of Sites of Special Scientific Interest by Area of Search">Location</a></th><td class="infobox-data region"><a href="/wiki/Hertfordshire" title="Hertfordshire">Hertfordshire</a></td></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Grid_reference" class="mw-redirect" title="Grid reference">Grid reference</a></th><td class="infobox-data"><span class="plainlinks nourlexpansion" style="white-space: nowrap"><a class="external text" href="https://geohack.toolforge.org/geohack.php?pagename=Little_Heath_Pit&params=51.763253_N_0.527752_W_region:GB_scale:25000">TL017082</a></span></td></tr><tr><th scope="row" class="infobox-label">Interest</th><td class="infobox-data category">Geological</td></tr><tr><th scope="row" class="infobox-label">Area</th><td class="infobox-data note">0.3 hectares</td></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/SSSI_notification#Notification" class="mw-redirect" title="SSSI notification">Notification</a></th><td class="infobox-data">1986</td></tr><tr><th scope="row" class="infobox-label">Location map</th><td class="infobox-data"><a rel="nofollow" class="external text" href="http://magic.defra.gov.uk/MagicMap.aspx?startTopic=Designations&activelayer=sssiIndex&query=HYPERLINK%3D%271001529%27"><i>Magic Map</i></a></td></tr></tbody></table> <p><b>Little Heath Pit</b> is a 0.3-hectare (0.74-acre) geological <a href="/wiki/Site_of_Special_Scientific_Interest" title="Site of Special Scientific Interest">Site of Special Scientific Interest</a> at <a href="/wiki/Little_Heath,_near_Hemel_Hempstead,_Hertfordshire" title="Little Heath, near Hemel Hempstead, Hertfordshire">Little Heath</a> near <a href="/wiki/Potten_End" title="Potten End">Potten End</a> in <a href="/wiki/Hertfordshire" title="Hertfordshire">Hertfordshire</a>. It is part of the <a href="/wiki/Ashridge" title="Ashridge">Ashridge Estate</a>, owned by the <a href="/wiki/National_Trust_for_Places_of_Historic_Interest_or_Natural_Beauty" class="mw-redirect" title="National Trust for Places of Historic Interest or Natural Beauty">National Trust</a>, and the local planning authority is <a href="/wiki/Dacorum_Borough_Council" class="mw-redirect" title="Dacorum Borough Council">Dacorum Borough Council</a>.<sup id="cite_ref-citation_1-0" class="reference"><a href="#cite_note-citation-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-map_2-0" class="reference"><a href="#cite_note-map-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-sign_3-0" class="reference"><a href="#cite_note-sign-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> It is listed in the <a href="/wiki/Geological_Conservation_Review" title="Geological Conservation Review">Geological Conservation Review</a>.<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> </p><p>The lowest layer is gravel dating to the beginning of the <a href="/wiki/Pleistocene" title="Pleistocene">Pleistocene</a> 2.6 million years ago. At this time the <a href="/wiki/North_Sea" title="North Sea">North Sea</a> covered much of south-east England and the site was in an inter-tidal area, but since then the <a href="/wiki/Chiltern_Hills" title="Chiltern Hills">Chiltern Hills</a> have risen 170 metres. Above this gravel layer is sand, and then another layer of gravel laid down some 20,000 years ago. This was the height of the <a href="/wiki/Last_Glacial_Maximum" title="Last Glacial Maximum">last ice age</a>, when the site was cold <a href="/wiki/Tundra" title="Tundra">tundra</a> like western <a href="/wiki/Siberia" title="Siberia">Siberia</a> today.<sup id="cite_ref-sign_3-1" class="reference"><a href="#cite_note-sign-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> According to <a href="/wiki/Natural_England" title="Natural England">Natural England</a> the site is "controversial" as the new excavation shows gravel of possible marine origin rather than glacial <a href="/wiki/Till" title="Till">till</a> as previously believed.<sup id="cite_ref-citation_1-1" class="reference"><a href="#cite_note-citation-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </p><p>The size of the site is unclear. In April 2012 the <a href="/wiki/Planning_Inspectorate" title="Planning Inspectorate">Planning Inspectorate</a> gave consent for the erection of fencing round the site to allow re-excavation of the site while protecting it against badger damage and protecting the public against accidentally falling into the deep pit. The size was given as 360 square metres (0.036 hectares).<sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> The excavation and erection of the fence were carried out shortly afterwards.<sup id="cite_ref-6" class="reference"><a href="#cite_note-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> However, the <a href="/wiki/Natural_England" title="Natural England">Natural England</a> (NE) citation gives the area as 0.3 hectares<sup id="cite_ref-citation_1-2" class="reference"><a href="#cite_note-citation-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> and the NE map shows a larger area of 1.2 hectares.<sup id="cite_ref-map_2-1" class="reference"><a href="#cite_note-map-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </p><p>There is access to the site from Bullbeggars Lane. </p><p>The surrounding area is wooded and covered in deep pits called locally 'dells''. These are the remains of working to extract the gravel during <a href="/wiki/World_War_I" title="World War I">World War One</a> to make sandbags of use at the front. <sup id="cite_ref-7" class="reference"><a href="#cite_note-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> </p> <style data-mw-deduplicate="TemplateStyles:r1235681985">.mw-parser-output .side-box{margin:4px 0;box-sizing:border-box;border:1px solid #aaa;font-size:88%;line-height:1.25em;background-color:var(--background-color-interactive-subtle,#f8f9fa);display:flow-root}.mw-parser-output .side-box-abovebelow,.mw-parser-output .side-box-text{padding:0.25em 0.9em}.mw-parser-output .side-box-image{padding:2px 0 2px 0.9em;text-align:center}.mw-parser-output .side-box-imageright{padding:2px 0.9em 2px 0;text-align:center}@media(min-width:500px){.mw-parser-output .side-box-flex{display:flex;align-items:center}.mw-parser-output .side-box-text{flex:1;min-width:0}}@media(min-width:720px){.mw-parser-output .side-box{width:238px}.mw-parser-output .side-box-right{clear:right;float:right;margin-left:1em}.mw-parser-output .side-box-left{margin-right:1em}}</style><style data-mw-deduplicate="TemplateStyles:r1237033735">@media print{body.ns-0 .mw-parser-output .sistersitebox{display:none!important}}@media screen{html.skin-theme-clientpref-night .mw-parser-output .sistersitebox img[src*="Wiktionary-logo-en-v2.svg"]{background-color:white}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .sistersitebox img[src*="Wiktionary-logo-en-v2.svg"]{background-color:white}}</style><div class="side-box side-box-right plainlinks sistersitebox"><style data-mw-deduplicate="TemplateStyles:r1126788409">.mw-parser-output .plainlist ol,.mw-parser-output .plainlist ul{line-height:inherit;list-style:none;margin:0;padding:0}.mw-parser-output .plainlist ol li,.mw-parser-output .plainlist ul li{margin-bottom:0}</style> <div class="side-box-flex"> <div class="side-box-image"><span class="noviewer" typeof="mw:File"><span><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" /></span></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:Little_Heath_Pit" class="extiw" title="commons:Category:Little Heath Pit">Little Heath Pit</a></span>.</div></div> </div> <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=Little_Heath_Pit&action=edit&section=1" 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-citation-1"><span class="mw-cite-backlink">^ <a href="#cite_ref-citation_1-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-citation_1-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-citation_1-2"><sup><i><b>c</b></i></sup></a></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 class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.sssi.naturalengland.org.uk/citation/citation_photo/1001529.pdf">"Little Heath Pit citation"</a> <span class="cs1-format">(PDF)</span>. Sites of Special Scientific Interest. Natural England<span class="reference-accessdate">. Retrieved <span class="nowrap">25 February</span> 2015</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Little+Heath+Pit+citation&rft.series=Sites+of+Special+Scientific+Interest&rft.pub=Natural+England&rft_id=http%3A%2F%2Fwww.sssi.naturalengland.org.uk%2Fcitation%2Fcitation_photo%2F1001529.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3ALittle+Heath+Pit" class="Z3988"></span></span> </li> <li id="cite_note-map-2"><span class="mw-cite-backlink">^ <a href="#cite_ref-map_2-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-map_2-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://magic.defra.gov.uk/MagicMap.aspx?startTopic=Designations&activelayer=sssiIndex&query=HYPERLINK%3D%271001529%27">"Map of Little Heath Pit"</a>. Sites of Special Scientific Interest. Natural England<span class="reference-accessdate">. Retrieved <span class="nowrap">25 February</span> 2015</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Map+of+Little+Heath+Pit&rft.series=Sites+of+Special+Scientific+Interest&rft.pub=Natural+England&rft_id=http%3A%2F%2Fmagic.defra.gov.uk%2FMagicMap.aspx%3FstartTopic%3DDesignations%26activelayer%3DsssiIndex%26query%3DHYPERLINK%253D%25271001529%2527&rfr_id=info%3Asid%2Fen.wikipedia.org%3ALittle+Heath+Pit" class="Z3988"></span></span> </li> <li id="cite_note-sign-3"><span class="mw-cite-backlink">^ <a href="#cite_ref-sign_3-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-sign_3-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text">Information board on the site</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 class="citation web cs1"><a rel="nofollow" class="external text" href="http://jncc.defra.gov.uk/default.aspx?page=4174&gcr=486">"Little Heath Pit (Quaternary of the Thames)"</a>. Joint Nature Conservation Committee<span class="reference-accessdate">. Retrieved <span class="nowrap">11 January</span> 2016</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Little+Heath+Pit+%28Quaternary+of+the+Thames%29&rft.pub=Joint+Nature+Conservation+Committee&rft_id=http%3A%2F%2Fjncc.defra.gov.uk%2Fdefault.aspx%3Fpage%3D4174%26gcr%3D486&rfr_id=info%3Asid%2Fen.wikipedia.org%3ALittle+Heath+Pit" class="Z3988"></span></span> </li> <li id="cite_note-5"><span class="mw-cite-backlink"><b><a href="#cite_ref-5">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFHolland2012" class="citation web cs1">Holland, Richard (3 April 2012). <a rel="nofollow" class="external text" href="http://www.planningportal.gov.uk/uploads/pins/common_land/decision/com_314_decision.pdf">"Application Ref: COM 314 Little Heath, Hertfordshire"</a> <span class="cs1-format">(PDF)</span>. The Planning Inspectorate.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Application+Ref%3A+COM+314+Little+Heath%2C+Hertfordshire&rft.pub=The+Planning+Inspectorate&rft.date=2012-04-03&rft.aulast=Holland&rft.aufirst=Richard&rft_id=http%3A%2F%2Fwww.planningportal.gov.uk%2Fuploads%2Fpins%2Fcommon_land%2Fdecision%2Fcom_314_decision.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3ALittle+Heath+Pit" class="Z3988"></span></span> </li> <li id="cite_note-6"><span class="mw-cite-backlink"><b><a href="#cite_ref-6">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFHartley2012" class="citation web cs1">Hartley, Andrew (1 May 2012). <a rel="nofollow" class="external text" href="http://designatedsites.naturalengland.org.uk/ReportUnitCondition.aspx?SiteCode=S1001529&ReportTitle=LITTLE%20HEATH%20PIT">"Condition of SSSI Units for Site LITTLE HEATH PIT"</a>. Natural England.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Condition+of+SSSI+Units+for+Site+LITTLE+HEATH+PIT&rft.pub=Natural+England&rft.date=2012-05-01&rft.aulast=Hartley&rft.aufirst=Andrew&rft_id=http%3A%2F%2Fdesignatedsites.naturalengland.org.uk%2FReportUnitCondition.aspx%3FSiteCode%3DS1001529%26ReportTitle%3DLITTLE%2520HEATH%2520PIT&rfr_id=info%3Asid%2Fen.wikipedia.org%3ALittle+Heath+Pit" class="Z3988"></span></span> </li> <li id="cite_note-7"><span class="mw-cite-backlink"><b><a href="#cite_ref-7">^</a></b></span> <span class="reference-text">Information board placed at the site by Hertfordshire Geological Society.</span> </li> </ol></div></div> <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 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navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:SSSIs_Hertfordshire" title="Template:SSSIs Hertfordshire"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:SSSIs_Hertfordshire" title="Template talk:SSSIs Hertfordshire"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:SSSIs_Hertfordshire" title="Special:EditPage/Template:SSSIs Hertfordshire"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Sites_of_Special_Scientific_Interest_in_Hertfordshire" style="font-size:114%;margin:0 4em"><a href="/wiki/List_of_Sites_of_Special_Scientific_Interest_in_Hertfordshire" title="List of Sites of Special Scientific Interest in Hertfordshire">Sites of Special Scientific Interest</a> in <a href="/wiki/Hertfordshire" title="Hertfordshire">Hertfordshire</a></div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%">Biological</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Aldbury_Nowers" title="Aldbury Nowers">Aldbury Nowers</a></li> <li><a href="/wiki/Alpine_Meadow,_Berkhamsted" title="Alpine Meadow, Berkhamsted">Alpine Meadow</a></li> <li><a href="/wiki/Amwell_Quarry" title="Amwell Quarry">Amwell Quarry</a></li> <li><a href="/wiki/Ashridge_Commons_and_Woods" title="Ashridge Commons and Woods">Ashridge Commons and Woods</a></li> <li><a href="/wiki/Ashwell_Springs" title="Ashwell Springs">Ashwell Springs</a></li> <li><a href="/wiki/Benington_High_Wood" title="Benington High Wood">Benington High Wood</a></li> <li><a href="/wiki/Blagrove_Common" title="Blagrove Common">Blagrove Common</a></li> <li><a href="/wiki/Bricket_Wood_Common" title="Bricket Wood Common">Bricket Wood Common</a></li> <li><a href="/wiki/Croxley_Common_Moor" title="Croxley Common Moor">Croxley Common Moor</a></li> <li><a href="/wiki/Frogmore_Meadows" title="Frogmore Meadows">Frogmore Meadows</a></li> <li><a href="/wiki/Great_Hormead_Park" title="Great Hormead Park">Great Hormead Park</a></li> <li><a href="/wiki/Hertford_Heath_nature_reserve" title="Hertford Heath nature reserve">Hertford Heath</a></li> <li><a href="/wiki/Hunsdon_Mead" title="Hunsdon Mead">Hunsdon Mead</a></li> <li><a href="/wiki/Knebworth_Woods" title="Knebworth Woods">Knebworth Woods</a></li> <li><a href="/wiki/Moor_Hall_Meadows" title="Moor Hall Meadows">Moor Hall Meadows</a></li> <li><a href="/wiki/Northaw_Great_Wood" title="Northaw Great Wood">Northaw Great Wood</a></li> <li><a href="/wiki/Tring_Park" title="Tring Park">Oddy Hill and Tring Park</a></li> <li><a href="/wiki/Patmore_Heath" title="Patmore Heath">Patmore Heath</a></li> <li><a href="/wiki/Plashes_Wood" title="Plashes Wood">Plashes Wood</a></li> <li><a href="/wiki/Redwell_Wood" title="Redwell Wood">Redwell Wood</a></li> <li><a href="/wiki/Roughdown_Common" title="Roughdown Common">Roughdown Common</a></li> <li><a href="/wiki/Rye_Meads" title="Rye Meads">Rye Meads</a></li> <li><a href="/wiki/Sarratt_Bottom_nature_reserve" title="Sarratt Bottom nature reserve">Sarratt Bottom</a></li> <li><a href="/wiki/Sawbridgeworth_Marsh" title="Sawbridgeworth Marsh">Sawbridgeworth Marsh</a></li> <li><a href="/wiki/Sherrardspark_Wood" title="Sherrardspark Wood">Sherrardspark Wood</a></li> <li><a href="/wiki/Tewinbury" title="Tewinbury">Tewinbury</a></li> <li><a href="/wiki/Therfield_Heath" title="Therfield Heath">Therfield Heath</a></li> <li><a href="/wiki/Thorley_Wash_nature_reserve" title="Thorley Wash nature reserve">Thorley Flood Pound</a></li> <li><a href="/wiki/Tring_Reservoirs" title="Tring Reservoirs">Tring Reservoirs</a></li> <li><a href="/wiki/Tring_Woodlands" title="Tring Woodlands">Tring Woodlands</a></li> <li><a href="/wiki/Turnford_and_Cheshunt_Pits" title="Turnford and Cheshunt Pits">Turnford and Cheshunt Pits</a></li> <li><a href="/wiki/Wain_Wood" title="Wain Wood">Wain Wood</a></li> <li><a href="/wiki/Water_End_Swallow_Holes" title="Water End Swallow Holes">Water End Swallow Holes</a></li> <li><a href="/wiki/Whippendell_Wood" title="Whippendell Wood">Whippendell Wood</a></li> <li><a href="/wiki/Wormley-Hoddesdonpark_Wood_North" title="Wormley-Hoddesdonpark Wood North">Wormley-Hoddesdonpark Wood North</a></li> <li><a href="/wiki/Wormley-Hoddesdonpark_Wood_South" title="Wormley-Hoddesdonpark Wood South">Wormley-Hoddesdonpark Wood South</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Geological</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Castle_Lime_Works_Quarry" title="Castle Lime Works Quarry">Castle Lime Works Quarry</a></li> <li><a href="/wiki/Downfield_Pit" title="Downfield Pit">Downfield Pit, Westmill</a></li> <li><a href="/wiki/Hillcollins_Pit" title="Hillcollins Pit">Hillcollins Pit</a></li> <li><a class="mw-selflink selflink">Little Heath Pit</a></li> <li><a href="/wiki/Moor_Mill_Quarry,_West" title="Moor Mill Quarry, West">Moor Mill Quarry, West</a></li> <li><a href="/wiki/Oughtonhead_Lane" title="Oughtonhead Lane">Oughtonhead Lane</a></li> <li><a href="/wiki/Westwood_Quarry" title="Westwood Quarry">Westwood Quarry</a></li></ul> </div></td></tr></tbody></table></div> <p><span class="geo-inline-hidden noexcerpt"><style data-mw-deduplicate="TemplateStyles:r1156832818">.mw-parser-output .geo-default,.mw-parser-output .geo-dms,.mw-parser-output .geo-dec{display:inline}.mw-parser-output .geo-nondefault,.mw-parser-output .geo-multi-punct,.mw-parser-output .geo-inline-hidden{display:none}.mw-parser-output .longitude,.mw-parser-output .latitude{white-space:nowrap}</style><span class="plainlinks nourlexpansion"><a class="external text" href="https://geohack.toolforge.org/geohack.php?pagename=Little_Heath_Pit&params=51.7633_N_0.5278_W_type:landmark_region:GB-BNE"><span class="geo-nondefault"><span class="geo-dms" title="Maps, aerial photos, and other data for this location"><span class="latitude">51°45′48″N</span> <span class="longitude">0°31′40″W</span></span></span><span class="geo-multi-punct"> / </span><span class="geo-default"><span class="geo-dec" title="Maps, aerial photos, and other data for this location">51.7633°N 0.5278°W</span><span style="display:none"> / <span class="geo">51.7633; -0.5278</span></span></span></a></span></span> </p>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Retrieved from "<a dir="ltr" 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