A well preserved mammoth carcass pulled from frozen sediments in the far north of Russia proves humans were present in the Arctic some 45,000 years ago.
This is 10,000 years earlier than previous evidence had indicated.
The extinct animal's bones display distinctive cut marks that can only have been produced by stone and ivory-tipped hunting and butchery tools.
Being able to exploit mammoths would have been key to these early settlers' spread and survival in the Arctic.
Not only would the great beasts have represented a high-energy food source, but their tusks and bones would have been a source of practical materials in a landscape where there are few suitable rocks from which to make spear tips, and other critical technologies.
"Not all areas - and the location of the mammoth find is among them - provide good lithic raw material. This is very typical for most of northern West Siberia," explained read more on bbc link-http://www.bbc.co.uk/news/science-environment-35320938
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