According to USA Today, Mitchell "broke through a safety perimeter at Burning Man and ran into the flames of the massive burning effigy Saturday night" September 2.
Shocking photographs show how fire rescue officers chased the man trying to stop him from entering the inferno, but were unable to do so.
In a statement, Burning Man said Mitchell was pulled from the flames by firefighters and airlifted to University of California-Davis' burn treatment center. The nine day festival is known for the traditional ending: the burning of the 50 foot statue.
"People try to run into the fire as part of their spiritual portion of Burning Man", Allen said.
Medical staff said Mitchell was not under the influence of alcohol and a toxicology screen is pending, the release said.
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That will bring the price up to 132.9 cents a litre, just as families hit the road for the long weekend. Gulf Coast region due to storm-related flooding.
But crowds were horrified when one reveller made a beeline for the giant wooden effigy and was engulfed by the flames, Daily Mail reports.
A Burning Man spokesman didn't immediately respond when asked for comment. In a statement, the Burning Man organization said it canceled other burns scheduled for Sunday, but will hold the traditional Temple burn Sunday night.
The 138-square-mile (359-square-kilometer) wildfire is now 28 percent contained.
The Man burns on the Black Rock Desert at Burning Man near Gerlach, Nevada.
Some 70,000 people from all over the world are thought to attend the gathering, and the man is believed to have dodged a number of security personnel to reach the flames.