Optimistic Cave, Ukraine
From series “Largest and Most Branched Caves on Earth”Lenght: 230 km.
Literally the most optimistic cave (Optymistytschna cave) in the world is located in Ternopol region, in Ukraine. It has the impressive size. The confused tunnels of the cave have the length of more than 230 km. The Optimistic Cave is the longest peak in the world. The complicated underground labyrinth was discovered in 1966. To date, more than 200 large expeditions have visited the cave.
One of the most striking discoveries of the scientists were the helictites - the unique calcite information. It was formerly thought that the Helictites can develop exclusively in the limestone caves. If the scientists will prove that the complex complex of the underground labyrinths is linked to the neighboring cave by the Optimistic Cave, it becomes one of the greatest speleological discoveries of recent years. In this case, the general length of the cave will be increased to 123 km.
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Gouffre Berger, France
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Optimistic Cave - interactive map
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