One Good Fact about Bat Bunkers

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The fortification saw little use during the war, but today its steady temperature and humidity make it an ideal hibernation spot for 37,000 bats from October to April.</h1> <div class="mt-25"> <a class="btn btn-outline-blue border shadow-sm ogf-border-color gtm-show-me-another-button" href="/one-good-fact/which-orange-came-first-the-fruit-or-the-color"> <em class="material-icons mr-5 ogf-replay-btn" data-icon="replay"></em> Show Me Another </a> </div> <div class="d-md-none d-block"> <button class="js-share-modal-button js-modal gtm-topic-tool share-btn-mobile btn-link mt-10 border-0 font-14 btn btn-xs btn-outline-blue border shadow-sm pr-10" data-modal=".md-share-modal"> <em class="material-icons md-icon ml-n10 my-n5 mr-5" data-icon="share"></em> Share </button> <div class="md-share-modal size-lg d-none qa-share-modal"> <div class="md-modal-body"> <div class="h2 font-serif d-flex align-items-center pb-15 border-bottom"> <em class="material-icons text-blue mr-10" data-icon="share"></em> 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One Good Fact about Bat Bunkers | Britannica