There are temperatures of extreme cold and craggy mountain ranges.
Times, Sunday Times (2012)
The faster approach reduces the time that the soldier is exposed to extreme cold at high altitude.
Times, Sunday Times (2006)
Greenland is also subject to extreme cold and total darkness in winter.
Times, Sunday Times (2006)
The extreme cold causes the body to retreat in on itself, pulling blood away from the limbs and into the head and torso.
Times, Sunday Times (2013)