Parks Victoria's regional director has confirmed the organistion will investigate suspected damage to cultural heritage in the Grampians National Park.
At a meeting discussing changes to access at Mount Arapiles, Jason Borg said the Victorian Climbing Club had made him aware of the perceived issue at Hollow Mountain, at the park's northern edge.
Photos shared with the Stawell Times-News and Ararat Advertiser appear to show chalk markings and chipped rock. The VCC said these photos had been taken in the past few months, and it was not known what type of park user did this.
A letter to Mr Borg from residents Jae Zhong and Michael Woods states the photos are taken at the end of a public walking track. The letter's authors also claim to have witnessed damage at Beehive Falls and Manja Shelter.
"I have made a commitment to follow that up with the team to see what we know about that and what is actually taking place," Mr Borg said.
Mr Borg said Parks would consider closing walking tracks that increased the likelihood of cultural heritage being damaged.
"If we get information that a walking track is leading to a place of cultural heritage and that that is increasing the likelihood of damage there, then absolutely we will take action because we are obliged to," he said.
"If people have evidence of that, then we ask them to let us know so we can take action."
Parks Victoria suggests people with information regarding environmental offences in a park such as damage to vegetation, cutting of firewood, carriage of firearms or taking of wildlife contact 13 1963 or email email@example.com.
Inaccurate signage to be changed
Mr Borg said Parks Victoria had also been made aware that signs had been put up in the Grampians, that suggested Licensed Tour Operators could be granted exemptions to climb in any area of the park where the practice is banned.
He said these were "in error".
"If a licensed tour operator is granted a licence, they can, but that sign is in error, because operators won't be given a licence to operate in there, that is not our intent," he said.
"That sign is being updated. By law we can issue a licence, but we are definitely not obliged to"
Approved LTOs can offer climbing in parts of Summerday Valley, at the park's northern end.