http://swissbaync5d7ykaz7dh7v4qjrb4gmen5aj3bogxrcgbb43ij34bjuyd.onion/pdf/Books/Survival/Survival/shltrall.html
Look for somewhere sheltered from the wind, on rising ground that has no
risk of flooding and is safe from rock falls or avalanches. Hot air rises, cold air sinks, so valley bottoms will often pockets of cold
air and in cold weather,be susceptible to frost and damp mist.