Siberian cave filled with mammoth, rhino and bear bones is ancient hyena lair

The cave has been untouched for around 42,000 years. It also contained the bones and teeth of hyena pups, suggesting they raised their young there.

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Russia ,Khakassia ,Khakasiya ,Yekaterinburg ,Sverdlovskaya Oblast ,Russian ,Dmitry Gimranov ,Dmitry Malikov ,Vs Sobolev Institute Of Geology ,Institute Of Geology ,Sobolev Institute ,Ural Branch ,Russian Academy ,Siberian Branch ,