00:00As they pack snow around the stick, they're creating an ancient survival tool that made
00:04life possible in the coldest places on earth. After the snow is packed tight and hardened,
00:08the stick is pulled out, leaving a deep vertical hole. Then a second hole is carved at the base,
00:13so it connects to the first one, forming a simple air tunnel. When wood is dropped inside and lit,
00:17instead of melting the snow, air is pulled in through the lower opening, forcing heat upward
00:21to keep the fire burning. The surrounding snow acts as insulation, trapping the heat and turning
00:26the whole structure into a natural stove. As the fire burns, it becomes hotter and more efficient,
00:31even in freezing temperatures. Once this method was discovered, people could cook,
00:35boil water, and generate heat in environments where fire shouldn't even work.
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