The Theodore Aboriginal artefact grinding grooves demonstrate an important aspect of past Aboriginal lifestyles and technologies. The site has exposed sandstone rock with grooves and scattered stone artefacts. There are two shapes of grooves here at Theodore. The round grooves were used for food processing and the oval-shaped for making and sharpening tools. Southern ACT Catchment Group worked with Ngunawal elder Wally Bell to install an educational sign at the site to allow for the canberra community to learn and appreciate ancient cultural heritage.