The future of one of Mount Gambier's most iconic natural landmarks is now open for public input, with the City of Mount Gambier endorsing a draft Umpherston Sinkhole/Balumbul Master Plan for community feedback through a public consultation period open until 24 April 2026.
The draft Master Plan provides a framework to guide the restoration, management and sustainable use of Umpherston Sinkhole/Balumbul, with a focus on environmental stewardship, improved visitor experiences and providing the opportunity for respectful cultural storytelling. It recognises the site's significance to both the local community and visitors, and its important role in Mount Gambier's natural and cultural identity.
The draft Master Plan was developed by Taylor Cullity Lethlean (TCL), supported by a multidisciplinary team with expertise in landscape architecture, urban design, architecture, engineering, lighting, tourism and wayfinding.
City of Mount Gambier General Manager People, Place and Liveability Chris White said the Master Plan balances protection of the site's unique values with opportunities to enhance how people experience it.
"Umpherston Sinkhole/Balumbul is one of Mount Gambier's most treasured natural places, and the draft Master Plan provides options to protect its environmental and cultural significance and support community activities while improving the overall visitor experience," Mr White said.
The draft Master Plan presents two concept options, designed to celebrate the site's existing character while improving access, parking, pathways, navigation and storytelling.
