A caverna é coberta por cristais maciços, alguns atingindo até 40 pés de comprimento. A caverna é extremamente quente, com temperaturas do ar atingindo até 58 graus Celsius com 90-99 por cento de umidade. A caverna é relativamente inexplorada devido a esses fatores, sem proteção adequada as pessoas só podem suportar 10 minutos de tempo de exploração.
A caverna está ligada à Mina Naica perto do município de Saucillo. Os cristais estão localizados a quase mil pés abaixo da superfície da mina.
Cave of the Crystals or Giant Crystal Cave (Spanish: Cueva de los Cristales) is a cave connected to the Naica Mine at a depth of 300 metres (980 ft), in Naica, Chihuahua, Mexico.
The main chamber contains giant selenite crystals (gypsum, CaSO4 • 2H2O), some of the largest natural crystals ever found. The cave's largest crystal found to date is 12 m (39 ft) in length, 4 m (13 ft) in diameter and 55 tons in weight. When it was accessible, the cave was extremely hot, with air temperatures reaching up to 58 °C (136 °F) with 90 to 99 percent humidity. The cave is relatively unexplored because of these factors. Without proper protection, people could only endure approximately ten minutes of exposure at a time.
The cave was discovered in April 2000 by the brothers Juan and Pedro Sanchez while drilling in the mine. As of October 2015 the mine had reflooded, and the cavern filled once more with the water rich in minerals required for the crystals to grow.
A group of scientists known as the Naica Project have been involved in researching these caverns.Provided By: https://en.wikipedia.org/wiki/Cave_of_the_Crystals