Northumbria Police says there is a problem with rural anti-social behaviour in Kielder.
Officers are working with Forestry England to tackle under age drinking, littering, off-road motorbikes and illegal camping.
Due to ongoing disorder and damage, wild camping at the four remote backpacking sites have been closed for the remainder of this year.
Camping at established sites such as the Kielder Campsite is still allowed; this is so those visiting the area can be given proper advice and guidance when camping.
Police say reports are still coming in detailing a small minority of people ignoring restrictions and not only camping illegally but also damaging the surrounding area and leaving trails of litter and waste.
These also follow similar incidents where anti-social behaviour has been reported to police including excessive and underage drinking in rural communities and off-road motorbike disorder.
We have stepped up patrols in the area and have been carrying out positive roadside checks and if we find anyone camping illegally or taking part in any sort of disorder then they will be moved on or dealt with. Kielder is an incredibly beautiful place that is enjoyed by residents and tourists throughout the year and deserves to be treated with respect.
Anyone wanting to report anti-social behaviour or illegal camping can do so via the ‘Tell Us Something’ page on the Northumbria Police website or by calling 101.