Mysterious Cave Houses World's Largest Crystals

Tucked away in the Mexican desert, hiding in the depths of a mysterious mountain called Naica, is a breathtaking cavern carved by the world's largest crystals. An elite team of scientists journeyed 1,000 feet underground to reveal the world's latest natural wonder and unlock the mystery of how these megalith marvels came to exist. "In a sense, we're looking for clues at the scene of a crime, and the crime occurred three and a half billion years ago," said Chris McKay, a NASA Ames Research... Full Story