Ok..flash-frozen requires a temperature of -150F.Uh, lets not say "fact" of being flash frozen. That
is speculation, with all evidence* being to the contrary.
Does the hypothesis I support -- that the animals died due to sudden, drastic climate changes -- necessitate such a low temperature? Nope.
Minus 100 is not going to flash freeze a mammoth.
The coldest temperature recorded in Alaska is 80 degrees below zero.
That'll work fine.