What is this weird huge mound in Siberia?
Deep in the taiga of eastern Siberia stands a 40-meter-high mound of shattered limestone, 160 meters across at its base, with a ring-shaped crown and a smaller peak rising f…
Deep in the taiga of eastern Siberia stands a 40-meter-high mound of shattered limestone, 160 meters across at its base, with a ring-shaped crown and a smaller peak rising f…
