Islands.com on MSN4mon
Stand Inside The World's Largest Geode At This Ethereal And Underrated Ohio Attraction
And if you go to Put-in-Bay, you can tour the island's geode for yourself. Read more: 25 Gorgeous Islands For Vacationing ...
BBC2y
Inside the world's largest crystal 'cave'
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?