PILL residents are being urged to report scrambler bike riders who are "repeatedly causing trouble" at Watchhouse Hill.
The Green Flag Awarded open space has been damaged by riders, who are described as being "a threat to visitors."
If you witness an incident of antisocial behaviour, call 101 or complete an online form on the Safer Stronger North Somerset website.
A spokesperson from the Safer Stronger North Somerset team said: "People on scrambler bikes are repeatedly causing trouble at Watchhouse Hill in Pill.
"This beautiful public open space has been re-awarded Green Flag Award status, meaning it has the highest possible environmental standards, is fantastically maintained and boasts excellent visitor facilities.
"This is thanks in no small part to the hard work and dedication of the Friends of Watchhouse Hill.
"But this idyllic spot is being disrupted by scrambler bikes. As well as damaging football pitches, paths and wildlife habitat, these bikes are being driven dangerously and are a threat to visitors and the riders themselves.
"It’s illegal to ride a motorcycle in a public open space, and Watchhouse Hill is also covered by a Public Space Protection Order (PSPO) that bans vehicles in the area from driving in a way likely to distress others."
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