Originally Posted By: AKSAR
If you do decide to attempt to walk out, it is probably best to make that decision early, before you become exhausted, hypothermic, run out of food, etc.


This is an extremely cogent and important point IMO. Unless you have a lot of food/water/heat/etc resources on hand, I think too few appreciate the importance of WHEN you decide to go/no-go. In a limited resource environment, the option of going may evaporate (sometimes literally...) after 24-48 hours.