Valentin

Valentin

Valentin
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The world's largest known cave, Son Doong - Vietnam (2880×4320)

Watch Out For Dinosaurs - Hang Son Doong Photo by Ryan Deboodt — National Geographic Your Shot

Amazing Jungle Inside Hang Son Doong Cave (photo: Ryan Deboodt/David Sprege, Treks) Sept 10, 2013

Amazing Jungle Inside of The World's Largest Hang Son Doong Cave in Vietnam (photo: Ryan Deboodt/David Sprege, Treks) Sept 2013

Mammoth Cave - Kentucky, USA / World’s longest Cave system.

Mammoth Cave, KY, longest known cave system in the world. One of the most incredible places I have ever been.

Mammoth Cave National Park, Kentucky

Mammoth Cave National Park was established on July 1941 to preserve the cave system, including Mammoth Cave, the scenic river valleys of the Green and Nolin rivers, and a section of south central Kentucky.

Mammoth Cave National Park, Central Kentucky, USA. The longest known cave system in the world. There are over 400 miles of caves that have been explored.

he Krubera Cave, Abkhazia, Georgia The deepest known cave on Earth. Located in the Arabika Massif of the Gagrinsky Range of the Western Caucasus, in the Gagra district of Abkhazia, Georgia’s breakaway republic.

Mammoth Cave is the world’s largest cave system with over 300 miles of documented passageways. The cave is so large that many researchers suspect there are hundreds of miles of cave that haven’t even been discovered. Mammoth Cave National Park is sure to make for an exciting day trip as you explore the natural wonder of the cavern and learn about Kentucky cave history.

Mammoth Cave is the world’s largest cave system with over 300 miles of documented passageways. The cave is so large that many researchers suspect there are hundreds of miles of cave that haven’t even been discovered. Go Spelunking!

The oldest part of Mammoth Cave in Kentucky was formed 10 million years ago, 9.5 million before Homo sapiens made an appearance.

A view of Mammoth Cave. This cavern has been in existence for hundreds of thousands of years. Can you see Jenna looking with amazement at the huge caverns as she stands close to Ranger Ted?