1113-102984 - Prehistoric Rock Art, Tadrart Valley, Akakus mountains, Libya, Sahara, North Africa

1116-40001 - Diver along a drop off covered with gorgonian and alcyonarian coral, Fiji

1116-39781 - Diver at the entrance to First Cathedral off the island of Lanai, Hawaii, United States of America

1116-39784 - Diver at one of the many openings around the dive site called First Cathedral off the island of Lanai, Hawaii, United States of America

1116-40000 - Divers are framed by the twin openings at a dive site known as Skull Cave off the Kona coast of the Big Island, Hawaii, United States of America

1116-40328 - Banff National Park, Alberta, Canada

1116-39759 - Diver at the entrance to a cavern off the island of Gato, Bohol Sea, Philippines

1116-39758 - Diver and schooling Yellowfin Goatfish (Mulloidichthys vanicolensis). This species turns red at night and when they are in caves during the day, Kauai, Hawaii, United States of America

1116-39783 - Diver outside of the dive site called First Cathedral off the island of Lanai, Hawaii, United States of America

1116-39782 - Diver inside a cavern known as First Cathedral off the island of Lanai, Hawaii, United States of America

1116-39993 - Diver and a school of Dusky batfish (Platax pinnatus) at the entrance to a cavern with alcyonarian coral off the island of Gato, Bohol Sea, Philippines

1299-49 - Hiker admires the three peaks of Lavaredo from the caves, Natural Park of the Three Peaks, Trentino-Alto Adige, Italy, Europe

1179-3526 - Aerial panoramic of Aescher-Wildkirchli Gasthaus, Ebenalp, Appenzell Innerrhoden, Switzerland, Europe

1179-3520 - Signpost of hiking trails, Wildkirchli, Ebenalp, Appenzell Innerrhoden, Switzerland, Europe

1179-3522 - Aerial panoramic of Wildkirchli (Wild Chapel) and caves on rock face, Ebenalp, Appenzell Innerrhoden, Switzerland, Europe

1179-3523 - Aerial panoramic of Wildkirchli (Wild Chapel) and caves, Ebenalp, Appenzell Innerrhoden, Switzerland, Europe

1179-3519 - Hikers on walkway to the ancient caves, Wildkirchli, Ebenalp, Appenzell Innerrhoden, Switzerland, Europe

1245-1158 - Marble Caves, Santuario de la Naturaleza Capillas de Marmol, General Carrera Lake, Aysen Region, Patagonia, Chile, South America

832-379116 - Stalactite Cave, Boron Thor, Ban Bo Tho, Krabi, Thailand, Asia

1184-2348 - Al Bidea Nabataean cemetery, Tobuk province, Saudi Arabia, Middle East

1184-2346 - Al Bidea Nabataean cemetery, Tobuk province, Saudi Arabia, Middle East

1184-2347 - Al Bidea Nabataean cemetery, Tobuk province, Saudi Arabia

1184-2345 - Al Bidea Nabataean cemetery, Tobuk province, Saudi Arabia, Middle East

1116-39565 - Water cascades over rocks inside a cave beneath the ice of Root Glacier in Wrangell-St. Elias National Park; Alaska, United States of America

1174-4486 - Exterior view of the rock caves and architecture of the facade in sandstone at Al Khazneh or The Treasury at Petra, Jordan at night, A red glow with small glowing lamps on the ground, Petra, Jordan

1179-2466 - Mountain retreat and old stone caves called Crotto, San Romerio Alp, Brusio, Poschiavo Valley, Canton of Graubunden, Switzerland, Europe

1242-86 - Where there are no cliffs or caves, crypts are carved into boulders, Tana Toraja, Sulawesi, Indonesia, Southeast Asia, Asia

321-5817 - Cave guide wearing protective hard hat inside one of the ice caves under the Vatnajokull Glacier, South Iceland, Polar Regions

1240-221 - Marble Arch Caves, County Fermanagh, Ulster, Northern Ireland, United Kingdom, Europe

1240-210 - Marble Arch Caves, County Fermanagh, Ulster, Northern Ireland, United Kingdom, Europe

1184-1781 - Cave paintings in Lass Geel caves, Somaliland, Somalia, Africa

1184-1783 - Cave paintings in Lass Geel caves, Somaliland, Somalia, Africa

1184-1786 - View over the desert from the Laas Geel caves, Somaliland, Somalia, Africa

1184-1784 - Local guide sitting in one the Laas Geel caves, Somaliland, Somalia, Africa

1184-1782 - Cave paintings in Lass Geel caves, Somaliland, Somalia, Africa

1184-1779 - Laas Geel caves with prehistoric paintings, Somaliland, Somalia, Africa

1184-1785 - Cave paintings in Lass Geel caves, Somaliland, Somalia, Africa

1184-1780 - Guide pointing at cave paintings in Lass Geel caves, Somaliland, Somalia, Africa

746-83220 - Scurati caves, Grotte di Scurati, Trapani, Sicily, Italy, Europe

746-73800 - Vineyards, Cantine Arnaldo Caprai, Montefalco, Umbria, Italy, Europe

746-73830 - Simona Valli, Cantina Rocca dei Fabbri, Montefalco, Umbria, Italy, Europe

746-73823 - Cantine Scacciadiavoli, Montefalco, Umbria, Italy, Europe

746-83224 - Scurati caves, Grotte di Scurati, Trapani, Sicily, Italy, Europe

746-73811 - Cantina Rocca dei Fabbri, Montefalco, Umbria, Italy, Europe

746-73793 - Cantina Rocca dei Fabbri, Montefalco, Umbria, Italy, Europe

746-73798 - Vineyards, Cantine Arnaldo Caprai, Montefalco, Umbria, Italy, Europe

746-38858 - Undergroun caves, Camerano, Marche, Italy

746-73792 - Bottles, Sagrantino di Montefalco, Montefalco, Umbria, Italy, Europe

746-73797 - Marco Caprai, Cantine Arnaldo Caprai, Montefalco, Umbria, Italy, Europe

746-73804 - Vineyards, Cantine Arnaldo Caprai, Montefalco, Umbria, Italy, Europe

746-73808 - Corks, Cantine Arnaldo Caprai, Montefalco, Umbria, Italy, Europe

746-9311 - Thalassotherapy caves, Tombolo Talasso Resort, Marina di Castagneto Carducci, Tuscany, Italy

746-73812 - Cantina Rocca dei Fabbri, Montefalco, Umbria, Italy, Europe

746-73794 - Cantina Rocca dei Fabbri, Montefalco, Umbria, Italy, Europe

746-73822 - Cantine Scacciadiavoli, Montefalco, Umbria, Italy, Europe

746-73832 - Marco Caprai, Cantine Arnaldo Caprai, Montefalco, Umbria, Italy, Europe

746-73805 - Cantine Arnaldo Caprai, Montefalco, Umbria, Italy, Europe

746-73802 - Vineyards, Cantine Arnaldo Caprai, Montefalco, Umbria, Italy, Europe

746-73803 - Vineyards, Cantine Arnaldo Caprai, Montefalco, Umbria, Italy, Europe

746-73807 - Cantine Arnaldo Caprai, Montefalco, Umbria, Italy, Europe

746-73806 - Vigneti, Cantine Arnaldo Caprai, Montefalco, Umbria, Italy, Europe

746-73819 - Cantine Scacciadiavoli, Montefalco, Umbria, Italy, Europe

746-73814 - Cantina Rocca dei Fabbri, Montefalco, Umbria, Italy, Europe

746-73817 - Filippo Antonelli, Cantine Antonelli, Montefalco, Umbria, Italy, Europe

746-50780 - Under the glacier, Saas-Fee, Vallese, Switzerland, Europe

746-9301 - Thalassotherapy caves, Tombolo Talasso Resort, Marina di Castagneto Carducci, Tuscany, Italy

1218-488 - Cavers shining lamps on bats in Pokhara Bat Caves, Pokhara, Nepal, Asia

1176-549 - Buddhist painting in the Ajanta Caves, UNESCO World Heritage Site, Maharashtra, India, Asia

1176-584 - Hindu statue at the Ellora Caves, UNESCO World Heritage Site, Maharashtra, India, Asia

1176-548 - Buddhist painting in the Ajanta Caves, UNESCO World Heritage Site, Maharashtra, India, Asia

1176-543 - General view of the Ajanta Caves, UNESCO World Heritage Site, Maharashtra, India, Asia

1176-547 - Grey langur monkey (Hanuman Langur) (Semnopithecus sp.) outside the Ajanta Caves, UNESCO World Heritage Site, Maharashtra, India, Asia

1176-541 - Sculpture of the Buddha in the main room of the temple of Vishvakarma (Cave 10), Ellora Caves, UNESCO World Heritage Site, Maharashtra, India, Asia

1176-550 - Buddha statue in the Ajanta Caves, UNESCO World Heritage Site, Maharashtra, India, Asia

1176-544 - Buddha statue and painting in the Ajanta Caves, UNESCO World Heritage Site, Maharashtra, India, Asia

1176-583 - Ajanta Caves, UNESCO World Heritage Site, Maharashtra, India, Asia

1176-545 - General view of the Ajanta Caves, UNESCO World Heritage Site, Maharashtra, India, Asia

846-2603 - Colourfully painted Estacion Caminito cafe with Tango display in La Boca district, Buenos Aires, Argentina, South America

1109-3038 - Colourful Hindu statues, Batu Caves, Kuala Lumpur, Malaysia, Southeast Asia, Asia

1109-3046 - Hindus worshipping and praying at Batu Caves, Kuala Lumpur, Malaysia, Southeast Asia, Asia

1109-3045 - Hindus worshipping and praying at Batu Caves, Kuala Lumpur, Malaysia, Southeast Asia, Asia

1109-3037 - Lord Murugan dtatue, the largest statue of a Hindu Deity in Malaysia at the entrance to Batu Caves, Kuala Lumpur, Malaysia, Southeast Asia, Asia

1109-3044 - Lord Murugan statue, the largest statue of a Hindu Deity in Malaysia at the entrance to Batu Caves, Kuala Lumpur, Malaysia, Southeast Asia, Asia

1109-3050 - Lord Murugan Statue, the largest statue of a Hindu Deity in Malaysia at the entrance to Batu Caves, Kuala Lumpur, Malaysia, Southeast Asia, Asia

1225-371 - Cueva de las Manos (Cave of Hands), UNESCO World Heritage Site, a cave or series of caves located in the province of Santa Cruz, 163 km south of the town of Perito Moreno, Patagonia, Argentina, South America

1225-373 - Cueva de las Manos (Cave of Hands), UNESCO World Heritage Site, a cave or series of caves located in the province of Santa Cruz, 163 km south of the town of Perito Moreno, Patagonia, Argentina, South America

1225-369 - Cueva de las Manos (Cave of Hands), UNESCO World Heritage Site, a cave or series of caves located in the province of Santa Cruz, 163 km south of the town of Perito Moreno, Patagonia, Argentina, South America

1225-375 - Cueva de las Manos (Cave of Hands), UNESCO World Heritage Site, a cave or series of caves located in the province of Santa Cruz, 163 km south of the town of Perito Moreno, Patagonia, Argentina, South America

1179-1293 - The natural show of Frasassi Caves with sharp stalactites and stalagmites, Genga, Province of Ancona, Marche, Italy, Europe

1179-1292 - The natural show of Frasassi Caves with sharp stalactites and stalagmites, Genga, Province of Ancona, Marche, Italy, Europe

1178-25791 - Australia, New South Wales, Jenolan Caves, Brush-tailed rock-wallaby (Petrogale penicillata) sitting on rock among branches

1178-25793 - Australia, New South Wales, Jenolan Caves, Brush-tailed rock-wallaby (Petrogale penicillata) sitting on rock among branches

1178-25795 - Australia, New South Wales, Jenolan Caves, Blue Lake, Car on road at shore of lake among forest covered slopes

1109-2990 - Buddha images in Kaw Ka Thawng Caves, Hpa An, Kayin State (Karen State), Myanmar (Burma), Asia

1231-1 - The giant statue to the Hindu Lord Murugan at the entrance to the Batu Caves, Gomback, Selangor, Malaysia, Southeast Asia, Asia

832-378733 - Venus Grotto of King Ludwig II, artificial stalactite cave with a lake and a shell-shaped boat, painting "Tannhäuser bei Frau Venus" by August von Heckel, palace gardens of Linderhof Palace, Upper Bavaria, Bavaria, Germany, Europe

1225-220 - San rock art cave paintings on the wall of a rocky overhang in the Stadsaal Caves in the Cederberg, Western Cape, South Africa, Africa

1109-2856 - Tourist in Waitomo Caves, Waikato Region, North Island, New Zealand, Pacific

1109-2852 - Glow worms in Waitomo Caves, Waikato Region, North Island, New Zealand, Pacific

1109-2855 - Tourists exploring Waitomo Caves, Waikato Region, North Island, New Zealand, Pacific