Police were alerted to a party in a forest near Biwisch on Saturday night. When officers arrived, they found more than 100 people at the event.
While most of them managed to escape, the police did note down the personal details of a number of individuals, many of whom came from the wider region.
The sound system at the party had to be taken down. Some cars got stuck in their attempt to get away, and had to be towed. The field was left damaged.
An investigation into the matter has been launched.
