Deep beneath the sun-scorched plains of northern Mexico, an astonishing underground cave defies belief. In the heart of the ...

A sort of south-of-the-border Fortress of Solitude, Mexico's Cueva de los Cristales ... Its walls studded with crystal "daggers," the Cave of Swords is closer to the surface, at a depth of ...

The Cave of Crystals, also known as the Giant Crystal Cave, is a cave connected to the Naica Mine at a depth of 300 meters (980 ft) in Naica, Chihuahua, Mexico. It takes the form of a chamber ...

The crystal caves, which were discovered in 2000 by Mexican mining company Peñoles, were opened to scientists in 2006, before being re-closed in 2010. When all the surrounding ores have been ...

Trash' found deep inside a Mexican cave turns out to be 500-year ... Mining operations in Naica began in 1974, and several crystal-filled caves have since been discovered — including the Cave ...

In April 2000, workers at the Naica Mines discovered a cave containing some of the largest crystals ever found. The Giant Crystal Cave, with crystals up to 39 feet long and weighing up to 55 tons ...

Discovered in the year 2000, the Cave of Crystals sits some 300 meters (984 feet) below the surface of the Sierra de Naica Mountain in Chihuahua, Mexico ... of giant gypsum crystal caves, formed ...

adding that Pulpí is not to be confused with another crystal marvel, the Naica Mine in Mexico, which has larger spars (15m long compared to Pulpí's two metres), but which is a cave lined with ...

The gypsum crystal structure—layers of calcium sulfate ... Related: Giant crystals in Mexican cave face dehydration To better understand the best way to preserve the crystals for generations ...

Visitors get an early look at calcium carbonate formations in Crystal Cave’s Organ Room within Sequoia National Park as the cave officially reopens to the public following years of closures due to ...

After four years of closure, Crystal Cave is reopening this month in Sequoia National Park. Learn why it was closed, how to ...

Canadian explorer George Kourounis was one of the few who were able to – and dared to – enter the beautiful but deadly crystal cave in Mexico. The treacherous cavern, concealed 300m below the ...