Columnar basalt on iceland coast

East of Reykjavik lies a mountain named Hengill. Hengill was formed from a Palagomite tuff and its highest point is around 800 metres above sea level. Hengill is a central volcano and has a giant magma chamber beneath it.

Doll's Theater inside Carlsbad Cavern National Park.

rock formations inside carlsbad caverns national park in new mexico. stalactites stalagmites and stone columns illuminated for display by the park lighting system. this area is called the doll\'s theater - a stock photo

Cavern Tours Georgetown, TX  Central Texas has cave after cave, the area is known as the Hill Country and you can caverans and caves all over the area centering around Austin.  I have been to several and enjoyed them.

Cavern Tours Georgetown, TX Central Texas has cave after cave. The area is known as the Hill Country, and you can visit caverns and caves all over the area centering around Austin. I have been to several and enjoyed them.

The Caverns of Sonora are still alive. The caves are still growing and forming all the various formations you'd expect - stalactites and stalagmites, straws and even bacon!

The Caverns of Sonora are still alive. The caves are still growing and forming all the various formations youd expect - stalactites and stalagmites, straws and even bacon!

Le Grotte di Frasassi - Frasassi caves, Marche.  We visited these on our last trip.  They are amazing!

Le Grotte di Frasassi - our guests love visiting here

Lechuguilla cave -Persian Gulf

nmnomad: “ ruisu-kun-geosciences: “ Lechuguilla Cave, Carlsbad Caverns National Park, New Mexico, USA. Lechuguilla Cave is, as of June the sixth longest cave miles km)) known to.

#RVing Luray Caverns, Virginia, USA…what a visit…three of us checking out the caverns….a sort of field trip for school project.

Double Column in Giant's Hall, Luray Caverns, Luray, Virginia (in the Shenandoah Valley) - 47 feet tall; the ceiling in Giant's Hall is over 60 feet high

SpiegelWasser

The Marble Cathedral In Marble Caves of Lake General Carrera, Patagonia, Chile

Lechiguilla grot - Werd in 1968 ontdekt in New Mexico en bevat bijzondere geologische formaties. Geen enkele onderzoeker mag het grottencomplex betredenZita 7 plaatsen die u nooit zult bezoeken Vrije tijd Reizen

nmnomad: “ ruisu-kun-geosciences: “ Lechuguilla Cave, Carlsbad Caverns National Park, New Mexico, USA. Lechuguilla Cave is, as of June the sixth longest cave miles km)) known to.

stalactites cave

Cave stalactites, stalagmites, and other formations at Luray.

Atta Cave - Dripstone Cave of Attendorn in Sauerland Germany

Atta Cave - Dripstone Cave of Attendorn in Sauerland Germany

Na imagem, uma vista de Tham Lum Khao Ngu. Olha o tamanho do homem na imagem...

Fotógrafo desvenda belezas de cavernas - 13/12/2017 - Bbc brasil - Fotografia - Folha de S.Paulo

A caver gazes at a stone formation in Tham Lum Khao Ngu (Snake Mountain Cave) in Kanchanaburi, Thailand, which houses the world’s tallest cave column or tall)Picture: John Spies / Barcroft Media Amazing photographs of huge cave systems in Thailand

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