Leave No Trace
Leave No Trace means just that. To leave no sign that people were present at this location or event once you have left. This mainly means to pack out any trash which you generate during an event.
It is one of the 10 principles of That Thing In The Desert as well as a common greater outdoors ethic. It is often said one should "take only photos, leave only footprints," but with thousands of people on a few acres we must make an effort to leave behind as few footprints as possible.
Closely tied to the LNT ethos within our burning community is the recognition of MOOP.