This is the story of the scientific research on and exploration of a fantastic place. Underneath the Naica mountains, in the state of Chihuahua, there is a cave system where the Cave of Crystals is found. It is a big geode, full of gigantic selenite crystals, unique in the world, or as Ph.D. in physics Giovanni Badino said: They are not just unique to our planet, or the solar system,... see more