Tens of thousands have gathered for the deranged nine-day festival of excess, which is unique among others in frowning at any hint of commercialism. Incredible photos show attendees donning outrageous Mad Max-style outfits, or even forgoing clothes at all, under the relentless sun. Some are seen traveling around the temporary city in post-apocalyptic "art cars" and bicycles. And the ritualistic burning of a giant human-shaped effigy is seen sending smoke and flames billowing into the empty skyline.