The Umpherston Sinkhole, Mt. Gambier, South Australia was formed when the limestone cave roof collapsed (don't know when though). In 1886 James Umpherston purchased the surrounding land and transformed the sinkhole into a beautiful garden.
This is a 6 shot stitched panorama using Photoshop Elements. The photos were shot using raw and processed in ACR.
As always, comments and feedback welcome 🙂
