🇦🇺Australia, Jenolan Caves

Jenolan Caves is a world-famous cave system located in the Blue Mountains of Australia, 175 kilometers from Sydney.

The Jenolan Caves are one of the oldest complexes in the world. By measuring the ratio of radioactive potassium and inert argon gas, which was released during the decay of potassium, scientists have determined the approximate age of clay in the cave - 340 million years.
The galactic formations in the caves are striking in their beauty. White, almost transparent stalactites shimmer with all the colors of the rainbow in the light of a lantern. Some caves are well lit and accessible to tourists, but most of the complex can only be explored by speleologists.
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