29/01/2026
Umpherston Sinkhole, also known as the Sunken Garden, is a naturally collapsed limestone cave in Mount Gambier that was transformed into a garden in the late 1800s.
the moment we walked down, it felt calm and cool, and seeing the greenery inside a sinkhole was something I had never experienced before. It’s definitely a must-see spot if you’re visiting Mount Gambier.
