The series follows these individuals as they are constantly battling for the most basic necessities in the minus-60-degree climate; so staying warm is a must in order to survive. Surprisingly, snow can actually be a great insulator. By building a suitable snow shelter, a warm and safe retreat from the harsh Alaskan landscape, or any wintry surrounding, is achievable. One of the most quick and effective ways to construct a snow shelter is in a tree well, which is the area directly below the lowest branches of some coniferous trees like spruces, larches, hemlocks, cedars, or firs. First, support the natural enclosure by propping up additional branches around the lowest branches. Next, dig out the amassed snow around the trunk. Finally, lay evergreen boughs on the bottom to make a comfortable resting place that can be as much as 40º F (22º C) warmer than the temperature outside.