ryazan stone, chelyabinsk arkain ergaki and kamchatka.nt pyramid is located almost on the same parallel. so maybe these are the descendants of the hyperboreans after the catastrophe that destroyed their earth settled across the latitude with the most familiar climate for them, keeping the remnants of skills and knowledge, entering into an alliance with ignorant and undeveloped tribes of people. they erected buildings with a system of signs, which now should tell us some terrible secret. the film crew of the mysterious russia program is trying to figure out what destroyed the great brother civilization, the legendary hyperborea. most researchers who have tried to seriously study this issue come to conclusions. the only thing that could lead to such radical changes on the globe as the change of magnetic poles and the disappearance of entire civilizations. it is a threat from the outside that an alien catastrophe occurred due to the fall of a giant asteroid to the earth about 10 km in size, which fell about 12.5 thousand years ago. and here