Exploration Underground
Exploration Underground, St. Cuthbert's Swallet Cave, Mendip Hills, Somerset, England
Photograph by Henry Patton
Within the limestone rocks of the Mendip Hills, England, lies an extensive netw...
The Chandelier
The Chandelier, Carlsbad Caverns National Park, New Mexico, United States
Photograph by Nick Zantop
Seven hundred feet below New Mexico's Guadelupe Mountains, the air is cool. The tiniest hint of a breeze...
All the Way Down
All the Way Down, Virgil the Turtle's Greathouse Cave, Montana, United States
Photograph by Philip Rykwalder
Seen in this photo, Elliot Stahl is struggling up a hill toward Virgil the Turtle's Greatho...