More like a mystery,the spectacular Giant Crystal Cave is connected to the Naica Mine, located nearly 1,000ft below Chihuahua Desert, Mexico. Its main chamber contains the largest selenite crystals ever found, some of them reaching 11 meters in length, 4 meters in diameter and about 55 tons in weight. Until you notice the orange-suited men clambering around, it’s hard to grasp the extraordinary scale of this underground crystal forest.These Razor-sharp rocks, deadly crevasses, Unbearable heat and Scalding water makes this place a challenge for explorers. This cave was discovered by two brothers drilling in the Naica lead and silver mine.
The conditions here are extreme, with a constant temperature of 58 °C and high humidity, proving to be a dangerous rather deadly environment for those who are exposed more than 10 minutes without proper equipment. The crystals are said to be 500,000 years old and were formed from the underground magma (situated below the cave) which maintained the water at a stable temperature of 50°C, saturating it with minerals, including gypsum. This process allowed the selenite crystals to grow to the gigantic sizes.