The Carlsbad Caverns, in New Mexico contain over 100 known caves, including America\'s deepest limestone cave and one of the world\'s largest underground chambers. It also has a rock shaped like a boob!
At Carlsbad Caverns, a million bats leave the caves in 20 minutes. We waited two and a half hours to watch this, so you better watch the video!
How long?? 0:18