Photo of the Day

Associated Press
In this photo taken, Friday, May 15, 2015, Jeremy Callen reviews where the group is during an expedition at Gypsum Cave near Shoshone, Idaho. One section of the cave has six traversable layers of tube, separated by rock. Pieces of the dividing rock collapsed, leaving huge rooms with multiple stories ,  and precarious sidewalks clinging to the walls. (Drew Nash/The Times-News via AP) MANDATORY CREDIT

View gallery

500 photos

View Comments (2)