Bonnaroo cleanup crews made a gruesome discovery in a tent on Tuesday - an unidentifed dead man who appears to be in his 20's. The Coffee County Sheriff tells the Chattanooga Times Free Press the man was alive on Monday at 3pm. They don't know what happened after that. There are no signs of trauma, and how he died is a mystery.  The medical examiner in Nashville will do an autopsy. 
According to The Tennessean, six people have died at Bonnaroo over the years, including two taken by a drug overdose, and one who was hit by a tour bus.