Groups planning illegal gatherings in Savernake Forest, Wiltshire, over the bank holiday weekend have been warned they will be "vigorously" dealt with. Wiltshire police are on standby after receiving reports that rave parties or music festivals are likely to be held.
In previous years, officers have been called to deal with cars being parked illegally throughout the woodland area and loud music being played.
Inspector Jerry Dawson says action will be taken to prevent similar offences.
"We will enforce current legislation vigorously and, with the land owner's permission, and in consultation with the relevant town or parish councils, we will take positive action," he said.