From the Burning Man website:
What is Burning Man?
A city in the desert. A culture of possibility. A network of dreamers and doers.
Once a year, tens of thousands of people gather in Nevada’s Black Rock Desert to create Black Rock City, a temporary metropolis dedicated to community, art, self-expression, and self-reliance. In this crucible of creativity, all are welcome.
Burning Man isn’t your usual festival. It’s a vibrant participatory metropolis generated by its citizens.
The 10 Principles of Burning Man
Leaving No Trace
ImmediacyRead full descriptions of the Principles here.