The death of Floyd Collins one century ago is being remembered as a catalyst for the formation of Mammoth Cave National Park, ...

Here’s how. Collins is considered “one of the greatest cave explorers of all time,” according to the National Park Service. He discovered Great Crystal Cave in 1917, which his family ran as a show ...

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 ...

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?

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 ...