Orda Cave is a gypsum crystal cave found underneath the western Ural Mountains of Russia at a maximum depth of 20 meters. The cave system stretches over 5.1 kilometres with the majority being underwater. This makes it one of the longest underwater caves and the largest underwater gypsum cave in the world.
There is not so much marine life in the cave but it has an impressive structure and topography which makes it appealing to visiting cave divers.
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