Umpherston Sinkhole is to experience one of the most stunningly beautiful marriages of man and nature it is one of the renowned gardens and caves located in the neighbourhoods of the Mount Gambier region. Umpherston Sinkhole, also known, as The Sunken Garden was once a cave formed through dissolution of the limestone. The sinkhole was created when the top of the chamber collapsed downwards. Now the topsoil down on the floor of the cave forms the perfect environment for the sunken garden.
The sinkhole is no ordinary hole in the ground, It is a natural wonder in its own right, forged from millennia of acidic groundwater eroding the porous Gambier Limestone. Presently, the Umpherston Sinkhole is a beautiful sunken garden that offers a perfect setting for guests to enjoy and spend some time with their loved ones.
An Australian icon of the most bazaar type, the Sinkhole was established as a recreational garden for the people of Mount Gambier and visitors to the region to enjoy. Originally beautified by James Umpherston around 1886, the sinkhole is open at all times and from dusk each evening the area comes alive with possums as they venture into the floodlit gardens to feed.