In this forum, it seems that there are too few articles on shelters made without tarps, emergency blankets, and the like. Almost all of the articles deal with man-made gear. I, for one, have made some extremely warm shelters out of completely natural materials, easily rivaling the warmth of any tent, so I think natural shelters are worth knowing how to build. I was wondering if some of you folks out there could pitch in your two cents about what works best in your area for natural bush shelters. Lean-to? A-frame? Here in the Northwest, I find that dome shelters, wiki-ups, and spider shelters work great. Advice? Comments? Suggestions?