In what has proved to be the discovery of the largest known crystals on earth, work is underway to document and preserve this historic find. While some minor damage has already occurred in the primary cave and a secondary cavern, called Cave of Dreams, iron doors have been installed by the Peñoles company to prevent damage to the giant, magnificent crystals.
Found deep in a mine in southern Chihuahua Mexico, these crystals were formed in a natural cave totally enclosed in bedrock. When I first stepped into the cavern it was like walking into the Land of the Giants. I have often admired crystal geodes held in my hand, but when photographing these unique natural structures it was almost impossible to get any sense of scale. This is a geode full of spectacular crystals as tall as pine trees, and in some cases greater in circumference. They have formed beautiful crystals that are a translucent gold and silver in color, and come in many incredible forms and shapes. Some of the largest are essentially columnar in shape and stand thirty to fifty feet high and three to four feet in diameter. Many of the smaller examples are four to six feet in circumference, have many incredible geometrical shapes, and probably weigh in excess of ten tons. The columnar pillars are at first the most striking shape, but later I noticed there were thousands of "sharks teeth" up to three feet high placed row upon row and dispersed at odd angles throughout the caverns. While some of the crystals are attached to the ceiling walls and floors of the cave as might be expected, some exist in great masses of spikes and almost float in air. These crystals seem to defy gravity, as they must weigh several tons.
The Naica mine was first discovered by early prospectors in 1794 south of Chihuahua City. They struck a vein of silver at the base of a range of hills called Naica by the Tarahumara Indians. The origin in the Tarahumara language seems to mean "a shady place". Perhaps here in the small canyon there was a grove of trees tucked away by a small canyon spring.
Via Dr. Stefan Gruenwald