Authorities closed down the Prickly Bark shelter and 7km of the Coastal Plain walk trail last month.
Yanchep National Park head ranger Mark Varley said it was extremely disappointing to see that kind of unruly behaviour affect the popular walking trail. ‘Park rangers have regularly responded to graffiti, damage and anti-social behaviour,’ he said.
‘This has been an ongoing problem for a number of years; it’s a shame that the actions of a small minority affect those who respect the trail facilities and surrounding environment.’
The closure of Prickly Bark shelter, which was 6km south of Neaves Road, leaves the 52km walk trail with three shelters.
‘Hikers can continue to use the facilities at the Shapcotts, Ridges and Moitch shelters,’ Mr Varley said.
The southern end of the trail is now at Neaves Road in Bullsbrook rather than Cooper Road.
Anyone with information about the vandalism can call Crime Stoppers on 1800 333 000.