The area in Garigal National Park, north of Sydney, has been sealed off by police.
“Apparently there was once a television series called Rush. In the 1994 fires in this area most or any of the remaining sets used were destroyed,” a parks and wildlife service spokeswoman told The Daily Telegraph.
The newspaper reports recent hazard-burning activity had revealed the long-forgotten set, but authorities were checking to see if it is a sacred Aboriginal site.
Colonial series Rush had 2 seasons on the ABC from 1974, and starred John Waters, Alwyn Kurts and Olivia Hamnett, with music by Brian May.
It was later parodied and revoiced by the D Generation’s Late Show as “The Olden Days.”