Feel free to mark (add note) where you were! ..Black Rock City is formed for a week in the middle of the desert (north of Reno, Nevada, USA). Just shy of 50 thousand in attendance last year. Had to go look-see... so I flew over to check it out. If you are interested in additional information see: www.burningman.com/
Massive structure in the center was burnt, hence the name.
You may want to check out the 2010 images: