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Green moss-covered rocks at the opening of a cave
A female Asian solo traveler and hiker is hiking in extreme terrains in a mountain in nature.
a large cave with a hole in it close up
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Mammoth Cave NP - Entering Cave - 1992. Scanned from Kodachrome 64 slide.
A view from a cave in Mount Charleston - Nevada
Daglı sinkhole, Kastamonu, Turkey
A cave view from inside in Vancouver Island,British Columbia with stone steps leading into woods
Cueva o cavdrna, dentro de un tronco de un arbol, madera, árbol en santa maría del oro nayarit
Jomblang cave, Indonesia
This is the overlook at the entrance to Timpanogos Cave in the American Fork Canyon.  You get to this entrance point after a 1 1/2 mile hike up the mountain so hikers are very happy to reach this spot and admire the canyon below.
Landscapes of Froya Island, off Trondheim, Norway
Dark cave with a bright daylight spot of exit. Natural cave opening in Crimea. Entrance to the karst cave in a mountain. Inside the subterranean cave background with copy space.
View from inside of Algar do Carvão cave, inside an extinct volcano,  in Terceira  island , Azores archipelago.
entrance to a cave in an old industrial excavation for mining in the Ural mountains
Lake Cave interior with stalactites and stalacmites, South Western Australia.
travel photography
The Coast of Tofino, on Vancouver Island.
Inside Jewel Cave National Monument in the Black Hills, South Dakota
Small Cave Entrance, Natural Cave in Kastamonu, Taskopru, Turkey.
Limestone cliff wall with entrance of the cave. Cave in a layered limestone rock. Sedimentary rock
Entrance to the  Cave Gýgagjá on the south-side of Hjörleifshöfði (Iceland).
entrance to a dark old rocky cave
Shete Boca park curacao
A shadowy cave entrance surrounded by rocky walls and fallen leaves, creating a mysterious and adventurous atmosphere in a forest setting.
Hole in canyon wall along Engineer pass 4x4 dirt road in the San Juan mountains of southwestern USA, Colorado, North America.
Entrance of a famous cave (Cueva del Gato) in Benaojan, Ronda, Spain.
View from a prehistoric rock cave in the forest. Batuecas Valley. La Alberca
Volcanic cave in Tenerife, Canary islands, Spain
Adventurous Woman Hiking in Yosemite National Park
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