Festival promoters have been warned by police they risk prosecution if they organise illegal raves over the summer.
The Wiltshire, Avon and Somerset, Devon and Cornwall, Gloucestershire and Dorset police forces are pooling intelligence to target organisers.
Officers believe many people will be attracted to the area for the solstice but, as the Glastonbury festival is rested, will look for other events.
The public were also being encouraged to report suspicious activity to them.
Police said they would liaise with English Heritage and other agencies during the solstice period to ensure the environment around Stonehenge is protected from unlawful activities.