Bong Bong was a small township in Wingecarribee Shire, New South Wales, Australia. It is also the name for the surrounding parish. It is within the Southern Highlands. The site was chosen by Governor Lachlan Macquarie in 1820 close to the ford on the Wingecarribee River. In 1821 it was laid out and there is an obelisk on the site stating "Site of Bong Bong Military Station and First Township Reserve on the Southern Highlands - surveyed 1821".
https://en.wikipedia.org/wiki/Bong_Bong,_New_South_Wales