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Danila Tkachenko ph. – Restricted Areas 18. Sarcophagus over a closed shaft which is 4 km deep – was one of the deepest scientific shafts in the world at the time. Northern region, Russia.
Danila Tkachenko ph. – Restricted Areas 18. Sarcophagus over a closed shaft which is 4 km deep – was one of the deepest scientific shafts in the world at the time. Northern region, Russia.