Crystals like those in Cueva de los Cristales form when hot, mineral-rich water fills underground cavities and remains undisturbed for a very long time. In the case of this cave, the water was ...

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?

Visitors seeking unique and quirky attractions should explore America's largest man-made crystal cave ... to our free newsletter for access to the world's best-kept travel secrets.

An investigation into the Co Kerry crime group at the root of the biggest ever seizure of crystal meth in the history of the ...