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Famous Underground Caves in the World

Formed over thousands, even millions of years, caverns are hidden natural wonders filled with gravity.  Formed over thousands, even millions of years, caverns are hidden natural wonders filled with gravity. Some are too dangerous for amateurs while the discovery of others has just begun.  Here are 11 Famous Underground Caves in the World.

01. Reed Flute Cave

02.Carlsbad Caverns
 flickr/SamuraiCatJB

03. Cave of the Crystals
flickr/Julie Rohloff 
04. Eisriesenwelt Cave
 flickr/Inspiration Point Studio
05. Jeita Grotto
 flickr/Kerimcan Akduman

06. Majlis al Jinn Cave
 wikipedia/Michaelmcandrew

07. Mulu Caves
 flickr/robdu91

08. Puerto Princesa Underground River
 flickr/Storm Crypt

09. Skocjan Caves
 flickr/StrudelMonkey
10. Waitomo Caves

flickr/murdocke23

11. Son Doong Cave, Vietnam
 @ CNN travel

Son Doong Cave, a cave belongs to the Phong Nha-Ke Bang grotto system in central Quang Binh Province, has been discovered to be the biggest in the world. At more than 200m high, 150m wide and 5km long, the Hang Son Doong cave in Vietnam is so big it has its own river, jungle and climate.

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