Metalheads came together from far and wide. Some wore black, more wore black, while yet others wore black.
But one or two wore traditional German clothes like Dirndl and Lederhosen. And some wore nothing at all.
In total around 75,000 people descended on the small town in Schleswig-Holstein and those who didn't bring wellies (black or otherwise) soon regretted it.
Torrential rain on the first day of the festival meant that people were wading ankle-deep through mud as they waited to enter the grounds.
But respite inside came in the form of headliners such as Rob Zombie, Cannibal Corpse and the legendary Judas Priest, a band so well-weathered they probably didn't even notice the rain.
By Saturday the sun was shining and the mud had dried up - either on the ground or caked to people's bodies.
At the end all that was left were many sore heads, a few sofas, and a camper van.
Tickets went on sale immediately after the concert for the 2016 version and within hours 45,000 had been sold.