Mexico’s Giant Crystal Cave Is Beautiful But Deadly, ... The largest is 11.40 meters (37.4 ft), with a volume of about 5 cubic meters (180 cu ft), and an estimated mass of 12 tonnes.

Giant Crystal Cave Comes to Light. See photos of some of the world's largest crystals in a giant Mexico cave under Naica mountain—discovered by miners.

The Cave of Crystals in Chihuahua, Mexico, is buried almost 1,000 feet (300 meters) beneath Earth's surface and contains giant gypsum crystal beams that are up to 37 feet (11 m) long.

The tallest of the cave’s crystals, one of the largest in the world, weighs a whopping 12 tonnes (13.2 tons) and stands 1 meter (3.2 feet) wide and 11.4 meters (37.4 feet) tall – that’s six ...

An abandoned mine in Spain hides a sparkling treasure – the world's largest geode, a natural crystal phenomenon that has stunned scientists. In abandoned silver mine in Pulpí, in Spain's south ...

Its walls studded with crystal "daggers," the Cave of Swords is closer to the surface, at a depth of nearly 400 feet (120 meters). While there are more crystals in the upper cave, they are far ...

The Cave of the Crystals is one of the most stunning geological wonders at the centre of the Earth – but it's not a place you ...

The mine of Naica, in the state of Chihuahua, Mexico, was opened in 1828 to mine for lead, zinc and silver ore. In 1910, a natural cave in the mine was discovered, which was later named Cueva de ...

Deep below a mountain near Naica, Mexico, miners searching for fresh ore deposits in 2000 came across an unexpected and awesome sight. Massive, milky-white crystals towered around them, filling a ...

Pulpí Geode: We take a tour inside the largest crystal 'cave' of its kind in the world.