Headbanging is a type of dance that involves violent shaking of the head in time to music, most commonly rock and heavy metal. Dancers "bang" their heads back and forth or in circular motions, making their hair flow wildly.
The violent movements may have health consequences, such as neck pain, headaches and shoulder problems. Cases of whiplash have been registered.
Three young festivalgoers recount the feelings spurred by headbanging:
"It's about the ecstasy, the ferocity of the music that just becomes one with the body. Metal music is extreme, so your movements have to follow along. This is not just nodding your head a little bit, the entire body has to be involved, it's about the monster inside."
(Villads Hoffmann, who attended COPENHELL in 2012)
"It about letting out energy, all the pent-up energy and rage that has to come out all at once, it's liberating.
(Tobias, who attended COPENHELL in 2012)
"It's just that everything becomes a whole when the music, the audience and the band move to the same rhythm. You can't help yourself, you're just swept away by the mood, and then it's really cool to show the band that you like the shit they're playing. You can worry about the pain the following day."
(Karina, who attended COPENHELL in 2012)
The photos in this series were shot in the summer of 2012 during concerts at the largest Danish metal festival, COPENHELL and at the WACKEN OPEN AIR in Germany, the world's largest open air metal festival.