A natural wonder, over time, limestone eroded and created this massive sinkhole 
and then turned into a spectacular garden, can you imagine this in spring time 
Some more info here
Umpherston Sinkhole, Mt Gambier aka Hanging Garden
A natural wonder, over time, limestone eroded and created this massive sinkhole and then turned into a spectacular garden, can you imagine this in spring time Some more info here
Sonny Vandevelde