Rotorua's Department of Conservation branch says it will have to spend thousands of dollars to remove about a dozen wrecked cars and secure and repair a scenic reserve.
DoC Rotorua acting senior ranger Jo Mendonca said a ranger recently found about eight wrecked cars and evidence of people driving theircars into the Patetere Scenic Reserve on Cecil Rd near Mamaku and doing "donuts" and illegally taking firewood from the area.
Miss Mendonca said the cars had been moved from within the reserve so they could be taken away, but since then people had dumped about another four vehicles next to them.
She said the cost to remove the cars, the laying of new roading metal and new signage for the reserve would run into the thousands of dollars.
DoC have had to lock gates at the Patetere Reserve to stop illegal dumping of cars, people doing "donuts" and stealing firewood. Photo/Supplied
In addition, DoC have had to lock the gate to the reserve entrance to try to stop people damaging it.
"It's a shame we have to spend taxpayer money on this sort of thing when we could be using that money to save our birds and forests."
She said the car wrecks were originally spotted a few months ago by a DoC ranger and "we've now found the lawn area badly damaged and have had to lock the gate".