Shelter is your number 1 priority when faced with having to survive out in the wilderness for more than a few hours, especially if the weather conditions are going to be a problem.

Take a look at the top 3 choices you should try out if you ever have to rely on a hand-built shelter out in the wild.

Of these, the easiest to build may be the rock shelter in which logs are simply laid on top of the pile of rocks to build a nook that can be heated with fire.

One of the drawbacks to this shelter are that you must start this shelter fairly early in the day to get a fire going that will heat the rocks. If you fail to heat the rocks, they will simply be leaching cold air that will chill you throughout the night.

As for the other two, if you have tarps and emergency blankets, build the thermal shelter, and if you don't, a wiki up will keep you pretty comfortable for a night or two.