My scenario would be one where you've been lost, and surviving in the woods for more than two weeks. You haven't given up hope of a rescue yet, but you begin to realize that you'll be here for a while. You"ve also experienced some rough weather conditions,[strong winds, coldness, extreme heat, or heavy rain] and you know that your lean-to tree shelter, or your tarp shelter isn't going to hold out to anymore bad weather. You need a more long-term shelter to protect you against the elements until a you're are found. What type of shelter are you going to build?