Scientists find the oldest permafrost yet discovered in Siberia
The layer, at a depth of about 50 meters, was some 650,000 years old.
An international team of researchers has found the oldest known permafrost in Siberia. The permafrost layer, located near the eastern Siberian village of Batagay, has been frozen in a depth of about 50 meters for the past 650,000 years — the oldest yet recorded.
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