karst

  1. Aleksandr Pankov

    Arsenovsky Karst spring, Russia (eng sub)

    Arsenovsky spring. On the territory of the Orda village in the Perm Krai there is an unremarkable pond. From above it may seem overgrown and lifeless, but its unimaginable landscape is hidden under the water. Just 700 meters from the spring there is the longest underwater cave in Russia -...
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