The amazing cave "de las Golondrinas", Mexico
Into A Moss Grown Cave. - Its a Long Climb out. Caving helmets with lights, climbing gear, caving suits, and all the required equipment...
247' Massive Waterfall In a Tennessee Cave (the people are for scale
June 5, 2012 - Passageway in the caves of Oregon Caves National Park. And yes, this actually is a color picture, not black & white.
The Crystal Pool in Dan yr Ogof Caves, South Wales (by Robbie Shone).*-*.
Hand of Dog stalagmite in Hang Son Doong Cave,The "Mountain River Cave", in a remote part of Vietnam's Annamite Mountains