Are there risks to staying in a snow cave for extended periods?

Structural Integrity and Collapse Risk

A snow cave’s structural integrity can be compromised if the snow is not properly compacted or if the cave is not constructed with a stable roof. A snow cave’s roof should be at least 1 meter (3.3 feet) thick to prevent collapse. Regularly checking the cave’s structure and making repairs as necessary can help minimize this risk. A collapse can be deadly, especially if it occurs at night when occupants are asleep.

Carbon Monoxide Poisoning

Carbon monoxide poisoning is a significant risk in snow caves, especially if a snow shelter is constructed near a snowmobiler’s exhaust or if a portable stove is used inside the cave. It’s essential to maintain good ventilation in the cave, which can be achieved by digging a ventilation shaft or using a heat source with a proper ventilation system. At least 1 meter (3.3 feet) of ventilation is recommended.

Health and Hygiene

Prolonged stays in a snow cave can also lead to health problems such as hypothermia, frostbite, and skin infections due to poor hygiene. To minimize these risks, it’s essential to maintain a clean and well-ventilated cave, and to change into dry clothes regularly. Snow caves can also become damp, which can lead to mold and mildew growth, making it essential to dry out the cave regularly.