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

Pulpí, Spain, Aug 4 (EFE).- The Pulpí Geode, the largest in Europe and second in the world, has opened to visitors 20 years after being discovered in southern Spain. The crystal cave is a major ...

When the fluids cooled, the crystals started forming. Pulpí Geode: We take a tour inside the largest crystal 'cave' of its kind in the world.

The geode here in Spain was originally spotted by miners in the Mina Rica, a silver mine which operated from 1873 to 1969. But it wasn't until years later, in 1999, that geologists found it again ...

(Read about weird life found in the Cave of the Crystals.) Perhaps because of this difficulty, not everything about the Pulpí Geode’s story is crystal clear.