Crystal Cave - Mexico.

Cave of the Crystals or Giant Crystal Cave is a cave connected to the Naica Mine 300 metres ft) below the surface, in Naica, Chihuahua, Mexico. The main chamber contains giant selenite crystals (gypsum, some of the largest natural crystals ever found.

Volcano Kilauea, Hawaii

25 Adorable and Breathtaking Places Around the World - Volcano Lava Kilauea, Hawaii, USA

Pink Volcano Sunrise ~ Hawaii

Ron Dahlquist Premium Thick-Wrap Canvas Wall Art Print entitled Hawaii, Big Island, Hawaii Volcanoes National Park, Kilauea Volcano Lava Flow, None

Crater Lake National Park, Pacific Crest Trail, Klamath, OR 97604 - Seven different trees live on Phantom Ship, an island in Crater Lake.  There are also colonies of violet green swallows, and several varieties of wildflowers and lichens living there.

The Phantom Ship, a small island in Crater Lake National Park, Oregon. Crater lake is one of the deepest lakes in North America.

Volcano of Kamchatka, Russia

Russia Tours - Russia Trip Finder - 56th Parallel Itineraries

Volcano erupting in Iceland.

Funny pictures about Wise words from I don't know how to even pronounce it. Oh, and cool pics about Wise words from I don't know how to even pronounce it. Also, Wise words from I don't know how to even pronounce it.

~~Shavlinskih bend ~ autumn reflections, Altai Republic, Severo-Chuyskiy range, Russia by Alexander Ermolitskii~~

Fans of adventure travel are constantly on the lookout for new destinations that reward them with a sense of discovery, Altai republic ticks all the boxes

Lava bombs. Eyjafjallajökull eruption, Iceland By

Lava bombs and charcoal grey smoke. Eyjafjallajökull eruption, Iceland by fredrikholm.

Eyjafjallajökull volcano eruption

“Eyjafjallajokull - Iceland” by Gunnar Gestur Geirmundsson-awesome!

Renowned for its vast landscapes and deep cultural significance, 56th Parallel’s Critters and Craters tour captures exactly what makes Kamchatka so special.

Kamchatka: The Mysteries of The Curious Critters & Powerful Craters

Russia's Kamchatka Peninsula has at least 19 active volcanoes, with the tallest being Klyuchevskaya Sopka - a competitor for most beautiful volcano on Earth.