The site of the engravings is a permanent spring. It was the place that the Adnyamathnha people gathered to tell their stories and to leave their mark. It is believed that the engravings are thousands of years old, possibly up to 30 to 40 thousand years old.
It can be a little difficult to see the engravings at first, but once you spot the tell-tale circles and lines, you'll begin to see more and more of them. The engravings are all different and each of them tell a story, possibly from a Dreamtime. It is unknown who created the artworks or when - unfortunately this story has been lost to the local Adnyamathanha people.
A tip is to take a photo of the visitor sign at the carpark and refer to it to help make your search a little easier. The sign explains all of the symbols and markings.
The art works are not behind a fence. They are all along the rock faces at the spring and you'll find that you walk past (and get very close to) many of them. Visitors are asked to respect these ancient works of art and not touch them. Touching may damage them and they, like their story and the people who created them, could be lost forever.
There are other Aboriginal art sites in the Flinders that have public access:
The Yourambulla Caves are magnificent as is Arkaroo Rock. Be sure to check them out too.