A Mount Gambier councillor has called for a second, less well-known area next to the city's famous Umpherston Sinkhole to also become a tourist attraction. The bottom of the Umpherston Sinkhole ...

Among its most renowned features are the Blue Lake and the Umpherston Sinkhole, a limestone cave that has been transformed into a "sunken garden" with lush vegetation and intriguing rock formations.

Additional cave-ins have expanded the size of the original sinkhole and water continues to flow into the area, officials said. The sinkhole was first formed at 9:50 a.m. on Jan. 28, when a 2-ton ...