[via]First started by Larry Harvey and a small group in 1986 in San Francisco (and not Dr. Dre), it is understood not as an event, but a way of life. Each person will give you there own meaning as to what exactly Burning Man 'is" but here is a general rundown:
The temporary city is governed by the Ten Principles including civic responsibility and communal effort.
Art is displayed and erected, theme cities are built and each person is expected to contribute.