Deep under the Chihuahuan Desert is a natural wonder, a cave filled with beautiful giant crystals, but which also happens to be a potential death trap.

Once submerged under the sea millions of years ago, the Cayman Crystal Caves were shaped by water erosion, creating rooms filled with stalagmite and stalactite formations. Over time, dripping ...

The infernal environment and the presence of the crystals has required the development of specific equipment and technology, ranging from refrigerated suits to “crystal-friendly” boots, in order to ...

U.S. News Insider Tip: Café Olé, just outside the Crystal & Fantasy Caves, has one of the best fish sandwiches on the island. A sun hat is essential because you'll sit in the garden while they ...

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?

I glance at my guide, Brian Kakuk—one of the world's foremost cave divers. He appears unfazed. My head begins to throb; clearly, I'm unusually sensitive to the toxin. In the epic poem Beowulf ...

"It's crystal clean. It's very white limestone," Mr Richards said. The team is hopeful that eventually a tunnel can be found all the way to the large Tank Cave about 2 kilometres to the north-west.

One of my favourites was the Crystal Cave Salad ($22), which consisted of a creamy ball of burrata atop a bed of heirloom beetroot salad and garnished with truffle honey and walnuts.