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, but to the galaxy. In contrast to the icy appearance of the megacrystals, the cave temperature remains around 45˚C with 100% humidity, conditions that are impossible for human life.