A significant cultural location in Western Australia's Midwest region has been attacked and severely damaged by vandals.

The ABC reports that the Bimara statue, a rock formation in the shape of a snake's head, was found in pieces on the banks of the Greenough River, east of Geraldton and 400 kilometres north of Boorloo/Perth, this week.

Naajuga Yamatji Elder Derek Councillor told the ABC was leading a walking tour in the area when he found the statue smashed into very small pieces, indicating the vandal or vandals had put considerable effort into destroying the significant formation.

"It's small chunks, it's not big chunks. They really belted into it. It looks to me like it was planned, came to destroy it so it [the story] couldn't be told again."

Mr Councillor told the ABC he believed the perpetrators who smashed the Bimara statue also cut down several tree branches found strewn across the site.

"These trees don't grow overnight, they take a long time to grow as well. It's like they just came here to destroy," he said.

"When we've got [a site] like this, we care for it and look after it and make sure nothing happens to it. If you don't respect a place that belongs to a story then anything could happen."

Mr Councillor said he wants the vandalism investigated.

City of Greater Geraldton Mayor Jerry Clune told the ABC the act of vandalism was devastating for the entire community and went against current efforts amid Reconciliation Week this week.

"Everyone's trying so hard to move forward. I would have thought better of our community," he said.