Most people who love to go into the wilderness take a tent with them or plan to spend the night in a cabin or lodge. However, trekkers can get lost, or rain could begin to pour from the ski; anyway, any camper could be forced to spend a night or two without any sort of manmade protection.
For those circumstances and different sorts of survival situations, knowing how to build a makeshift shelter can help you stay out of a lot of trouble.
Here you have some articles and written material on this issue:
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