Imagine a cave where the walls are covered with huge, sparkling crystals, some as big as trees. This isn’t a scene from a ...

What their lights illuminated would come to be called “The Cave of Crystals,” and it’s as deadly as it is beautiful. As the ...

Naica’s Crystals Cave, maybe the most amazing underground wonder on Earth, was discovered by chance inside the deep mine of Naica, in the State of Chihuahua, Mexico. It is a true geode: a cave ...

Discovered in 1999 inside an abandoned mine in Southern Spain, Pulpí Geode is the largest crystal 'cave' of its kind in the world. But what exactly is a geode and how do crystals form inside them?

The caves covered in crystal formations surround a 55-foot deep ... The last tour leaves at 4:30 p.m. Admission to one cave costs $24 for adults and $10 for children ages 5 to 12; admission ...

Follow the river inside the pillars, and you will find more crystals along the edges and on the walls. The cave hidden inside this area also has tons of crystals, but this area is dangerous as it ...