Geological Tourism Inside Nettlebed Cave: Crystals in a pool (PHOTOS) The Crystal cave in Ohio 'Huge celestite crystals' Lechuguilla cave: Jewel of the Underground Enormous crystal Geode discovered in Spain The Only Diamond Mine In the World Where You Can Be the Miner Crystal Mountain, Egypt (Photos) The Rainbow Mountains in Peru very Amazing Coleman Mine The best place to find quartz cluster The Dinosaur Dance Floor in Bolivia Cave of Crystals "Giant Crystal Cave" at Naica, Mexico Spectacular Neon Blue Lava Pours From Indonesia's Kawah Ijen Volcano At Night (PHOTOS) Travertine Hot Springs at Pamukkale, Turkey The Green Sand Beach (Papakōlea Beach)' Lena's Stone Forest in Russia Live Inside an Active Volcano on Aogashima Island See the World’s Largest Collection of Fluorescent Rocks The Beauty of Quebrada de Humahuaca, Argentina Monte Roraima "The Real Lost World" The weird valley Kutkhiny Baty The Giant Nephrite Jade Road In Canada The Unique Structure of the Columnar Sandstones