The origin of the giant holes is still unknown. Photo: SCMP Pictures The origin of the giant holes is still unknown. Photo: SCMP Pictures
The origin of the giant holes is still unknown. Photo: SCMP Pictures

Two more giant craters found in Siberia, origin still unknown

The origin of the giant holes is still unknown. Photo: SCMP Pictures The origin of the giant holes is still unknown. Photo: SCMP Pictures
The origin of the giant holes is still unknown. Photo: SCMP Pictures
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