Tony Phelps / Chacma baboon (Papio ursinus) troop exiting den, DeHoop Nature Reserve, Western Cape, South Africa, June.
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Angelo Gandolfi / Gruta do Lago Azul, karst cave and lake in Bonito, Mato Grosso do Sul, Brazil, August 2010.
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Inaki Relanzon / Lesser Horseshoe Bat (Rinolophus hipposideros) hibernating in Forat de l'Or cave in Terradets Canyon, Pyrenees, Lleida, Catalonia, Spain, December
01441387
Franco Banfi / Two women snorkeling in front of the cave, Raja Ampat, Irian Jaya, West Papua, Indonesia, Pacific Ocean. Model released.
01428424
Inaki Relanzon / Potholer touching a stalagmite whilst exploring the Graller del Boixaguer cave, Montsec mountains, Pyrenees, Catalonia, Spain, May 2012. Model released.
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Inaki Relanzon / Potholer exploring the Graller del Boixaguer cave, Montsec mountains, Pyrenees, Catalonia, Spain, May 2012. Model released.
01409904
Jabruson / Sundevall's Leaf-nosed Bats (Hipposideros caffer) in flight in forest roosting cave. Bai Hokou, Dzanga-Ndoki National Park, Central African Republic.
01240171
Mark Carwardine / Mark Carwardine and Douglas Adams on location for BBC radio series 'Last chance to see' in Robinson Crusoe's cave, Juan Fernandez Islands, Chile, December 1988
01405587
Solvin Zankl / Schreiber's long fingered bat (Miniopterus schreibersi) in flight in cave, Grotta Monte Majore, Sardinia, Italy. Highly commended, Mammals category, GDT 2012 competition.
01399040
Eric Medard / Lesser Mouse Eared Bat (Myotis blythii) in flight in cave. France, Europe, August.
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Eric Medard / Mediterranean Horseshoe Bat (Rhinolophus euryale) in flight in cave. France, Europe, August.
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Eric Medard / Bechstein's Bat (Myotis bechsteinii) in flight in cave. France, Europe, August.
