They are clean and do not scar a fragile campsite. Minimize building, whether for kitchen emplacements or bedsites. Rig tents or tarps with lines tied to rocks or trees. Never cut boughs or poles or put nails in trees. When breaking camp, erase all evidence that our were there.
Fires Use existing fire sites whenever possible.
If you can camp where no one has camped before, build a minimum fireplace. Clear a wide circle around the fire down to mineral soil. When breaking camp, drown fire completely, stir and drown again until ashes are cold to the touch. Bury ashes and charcoal. Cover all traces.