Music festival in Wacken

Heavy metal fans order a beer at a bar with their trousers down at the music festival in Wacken, northern Germany on August 3, 2011.  (AFP/Carsten Rehder)

Heavy metal fans order a beer at a bar with their trousers down at the music festival in Wacken, northern Germany on August 3, 2011. More than 75,000 visitors are expected to attend the world's largest heavy metal festival from August 4 to 6 in the small village of Wacken.  (AFP/Carsten Rehder)

A participant swings her head during a performance at the annual heavy metal music open-air festival in the northern German village of Wacken near Hamburg on August 4, 2011. The festival was established in 1990 and attracts more than 75,000 participants.  (Reuters/Morris Mac Matzen)

Heavy metal fans cheer as they listen to a concert at the music festival in Wacken, northern Germany on August 4, 2011.  (AFP/Carsten Rehder)

A participant crowd surfs during the performance of British singer Ozzy Osbourne at the annual heavy metal music open-air festival in the northern German village of Wacken near Hamburg on August 4, 2011. The festival was established in 1990 and attracts more than 75,000 participants.  (Reuters/Morris Mac Matzen)

Heavy metal fans are pictured while head banging at the music festival in Wacken, northern Germany on August 3, 2011. (AFP/Carsten Rehder)

British singer Ozzy Osbourne performs at the annual heavy metal music open-air festival in the northern German village of Wacken near Hamburg on August 4, 2011. The festival was established in 1990 and attracts more than 75,000 participants. (Reuters/Morris Mac Matzen)

Heavy metal fans cheer as they listen to a concert at the music festival in Wacken, northern Germany on August 4, 2011.  (AFP/Carsten Rehder)

Heavy metal fans are pictured while head banging at the music festival in Wacken, northern Germany on August 3, 2011. (AFP/Carsten Rehder)

Heavy metal fans cheer with beer at the music festival in Wacken, northern Germany on August 3, 2011.  (AFP/Carsten Rehder)

An English heavy metal gestures at the music festival in Wacken, northern Germany, on August 3, 2011. More than 75,000 visitors are expected to attend the world's largest heavy metal festival from August 4 to 6 in the small village of Wacken.  (AFP/Carsten Rehder)

People walk trough the entrance towards the main stages during the annual heavy metal music open-air festival in the northern German village of Wacken near Hamburg on August 4, 2011. The festival was established in 1990 and attracts more than 75,000 participants.  (Reuters/Morris Mac Matzen)