Monday, October 11, 2010
The Ice Palace
Deep beneath Mexico's Chihuahuan Desert are caves where the temperature is 118 Fahrenheit and the humidity is 90 percent, a combination that can kill in less than an hour. Explorers using ice-cooled suits have found within those caves chambers of astonishing wonder: the Cave of Swords, the Cave of Sails, the Queen's Eye. The latest to be revealed is the Ice Palace, a huge chamber home to giant gypsum crystals that may be the largest crystals yet found on earth. National Geographic has a slide show, and an upcoming documentary.