Bottom of Gaping Gill, Yorkshire. Britain's highest unbroken waterfall plunges 328 ft into Gaping Gill, one of Britain's largest and most complex cave systems.<- It's a dream of mine to explore caves. "the descent" style.
Cave Diving in Tulum, Mexico Photograph by Patrik Gustafsson, National Geographic Your Shot A diver explores a cenote in Tulum, Mexico. Ancient Maya believed that the rain god Chaak lived in these natural wells. Now they are giving archaeologists new ins
A group of cavers descends into Ellison's Cave far under Pigeon Mountain in northwest Georgia. The cave's "Fantastic Pit," seen here, is the deepest cave drop in the continental United States at a staggering 586 vertical feet.