An aerial view of the Burning Man 2013 arts and music festival is seen in the Black Rock Desert of Nevada

An aerial view of the Burning Man 2013 arts and music festival is seen in the Black Rock Desert of Nevada, August 29, 2013. The federal government issued a permit for 68,000 people from all over the world to gather at the sold out festival, which is celebrating its 27th year, to spend a week in the remote desert cut off from much of the outside world to experience art, music and the unique community that develops. REUTERS/Jim Urquhart (UNITED STATES – Tags: SOCIETY) FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS. NO THIRD PARTY SALES. NOT FOR USE BY REUTERS THIRD PARTY DISTRIBUTORS. FOR USE WITH BURNING MAN RELATED REPORTING ONLY ORG XMIT: JU104

An art car shaped like a train drives across the desert in the early morning hours at the 2013 Burning Man arts and music festival in the Black Rock desert of Nevada
Members of Northwest Fire Conclave perform during Burning Man 2013 arts and music festival in the Black Rock Desert of Nevada