Indigenous art discovery extends Sydney train halt

Trains between Sydney's west and the Blue Mountains may not run all week after workers trying to remove a boulder found culturally significant Aboriginal art.

Buses will continue to replace trains between Penrith & Springwood until potentially early next week. Source: Facebook

A section of track on Sydney's outskirts may not run trains all week after Aboriginal handprint art was uncovered during work to break up a boulder teetering on a cliff.

Sydney Trains has confirmed buses will run between Penrith and Springwood in the Blue Mountains until potentially next week.

Trains stopped on Saturday after a 20-tonne boulder dislodged from a cliff over tracks at Glenbrook.

Workers later discovered multiple handprints on the cliff, which were later verified by an independent archaeologist specialising in Aboriginal heritage as culturally significant rock art.

"I would like to reassure people that we are doing everything possible to re-open the Blue Mountains Line as quickly as possible while balancing safety and heritage concerns," Sydney Trains and NSW TrainLink chief executive Howard Collins said in a statement on Tuesday.

"We acknowledge the traditional custodians of the land and we always seek to respect, recognise and celebrate Aboriginal culture across our network and organisation."

Sydney Trains is now working with the local Aboriginal land council and the state heritage office to ensure the artwork is preserved.