I met a self-described “mountain man” in Montana once, and I asked how he stayed warm in the winter. He told me the key was to build an insulated nest, below ground, packed with snow, and then you light a single candle and close up the nest. That this was enough to stay warm even in the Montana winter.
It’s hard to know if what he was saying was true or not, but I think I believe it. He also saw my VW and immediately observed that it had been in an accident based on the way the doors hung. So, I feel like he knew some stuff.
