Roonka Flat is a Stone Age burial site and dwelling site in the mid Murray region near present-day Blanchetown, South Australia in Ngarrindjeri country.
A body was found with a stone dagger 29 cm long, presumably used to open the rib cage.
70 other burials date from after 4,000 BC and reveal changes in funeral rites.
The tombs contain offerings, bone awls, hairpins and stone objects.
Some individuals were buried in elaborate costume, with jewelry and accompanied by a child.