The small recreational area just above Campbells Bay is owned by the Kakanui Ratepayers and Improvement Society (KRAIS).
It affords a stunning coastal view towards Moeraki and is normally frequented by picnikers and surfers.
But two nights of vandalism at the weekend has left it an impassable mess of mud.
Society co-chair John Laing said successive burnouts between Friday night and Sunday morning were "really frustrating" after over 50 years of care by the group.
"Their 10 minutes of fun means for months people aren’t going to use this area," he said.
"This is not representative of the community, this sort of crap.
"Most people using the area come for recreation, not this sort of rubbish."
A screaming vehicle was initially heard about 10pm on Good Friday.
"By the time they looked out, it had gone."
Mr Laing visited the reserve on Saturday morning to discover a substantial mess.
The vandalism suggested people "off their heads" on something and was "pretty gutless", he said.
"Obviously they hit a tree over there, so hopefully there is a bit of damage to their vehicle.
"You don’t do this and come away with a nice clean car."
The burnouts were repeated the next night.
The area would have to be barricaded and it would take months to stabilise and regrass.
Mr Laing said the local police had been "really good" in implementing a system to ensure further reports would immediately prompt a response.
"Someday somebody is going to be doing it and a police car will be waiting for them."
Security footage from nearby properties would likely help, he said.
Mr Laing said they would work with any perpetrators caught to fix the damage and regrass it.
"They can come out here and we’ll give them a roller and they can flatten it all."
Oamaru community constable Rachael Osborn said police had received an online incident report, but it would have helped if someone had dialled 111 so police could have done something.
Police in North Otago were particularly keen to encourage locals to be "more vigilant" and call incidents in, "because we don’t get nearly enough calls for burnouts".
