Coolest or coldest?? The coldest region is definitely the Antarctic. Antarctica to be exact.
Greenland
Africa
mesosphere.
Mesosphere
arctic coastal plain
monutins
Tundra - Canada's most northerly vegetation region.
taiga
I think that the Yakutsk region is the coldest region, even colder than Siberia.
In the Yukon village Snag
You may be thinking of Antarctica.