This is true, I saw a documentary on this where a guy got caught out at night because he was looking for something and forgot his way back. Anyway, he cut open a mammoth and slept in it all night to keep warm. They found him in the morning and he was pretty much ok.
I saw a documentary ... he cut open a mammoth
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You mean they were filming scenes like that 11,000 years ago?
Like the Tauntaun on the ice world of Hoth — kill ‘em, cut ‘em open, crawl inside. :^)
https://teamcoco.com/video/bill-hader-dying-tauntaun
https://www.youtube.com/watch?v=05CcgmZGN-I