An ideal shelter for areas with deep snow

Credit: Clayton Hanmer

Find a bank of snow

Make sure it's at least six feet deep. Digging up and into a slope will make moving the snow out easier since you can throw it downhill.
Credit: Clayton Hanmer

Dig an entrance

Make your tunnel large enough for you to crawl through. Once you have dug deep enough into the bank, begin digging upward before continuing to dig toward the back of the cave. The main sleeping space should be on a bench at least half a foot higher than the top of the entrance tunnel. Having the entrance as the lowest part of the cave helps to keep warm air inside.
Credit: Clayton Hanmer

Make room

Clear out enough space for sleeping, making sure that the ceiling is at least a foot thick (probe with twigs to gauge thickness).
Credit: Clayton Hanmer

Breathe

Poke a small venting hole in the ceiling to ensure a fresh air supply.