Lol Picture June 29, 2019 at 11:40PM

This is what an Igloo looks like when you build a fire inside. The fire inside melts the inner layer of ice, and the cold outside refreezes it, adding a layer of insulation that can keep the igloo at 60° inside while it's -50° outside.

https://i.redd.it/ew3rjyl7xc731.jpg


via /r/pics