• Participants fight in the Thunder Dome during the Burning Man 2011 "Rites of Passage" arts and mu...

    Participants fight in the Thunder Dome during the Burning Man 2011 “Rites of Passage” arts and music festival in the Black Rock desert of Nevada, September 3, 2011. More than 50,000 people from all over the world have gathered at the sold out festival which is celebrating its 25th year. (REUTERS/Jim Urquhart)

  • (REUTERS/Jim Urquhart)

    (REUTERS/Jim Urquhart)

  • (REUTERS/Jim Urquhart)

    (REUTERS/Jim Urquhart)

  • (REUTERS/Jim Urquhart)

    (REUTERS/Jim Urquhart)

  • (REUTERS/Jim Urquhart)

    (REUTERS/Jim Urquhart)