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?

SEQUOIA NATIONAL PARK (KFSN) -- After a four-year closure, Crystal Cave in Sequoia National Park is finally opening to ...

Researchers think this occurred over the past 10,000 to 15,000 years, after glaciers retreated from the region and exposed its stone to weathering. Related: Cave of Crystals: The deadly cavern in ...

The Crystal Staff can be upgraded using Somber Smithing Stones and cannot be infused with ... an illusory wall inside the Academy Crystal Cave beneath Raya Lucaria Academy. Check out the map ...

Crystal Cave is reopening after a four-year closure, inviting visitors to marvel at its underground splendor. Tickets for ...