Permafrost

Permafrost was a type of ground present on frigid planets.

The AT-STs of Blizzard Force were equipped with specialized sensors to guarantee the frozen ground of Hoth would bear the weight of the bigger AT-ATs.

Alexsandr "Trooper" Badure remarked that the commandant of the Imperial Academy became "as cold as ice" when Cadet Han Solo corrected him before a training exercise.