Time Out says
Wannon Falls is classified as a punchbowl waterfall, meaning water descends in a single 30-metre-tall flow into a nice, big “punchbowl”-looking pool. It’s located just west of Hamilton, in western Victoria. The waterfall is fed by the Wannon River, and you’ll learn a lot about the local flora, fauna and Koori history while there. While in the area, we suggest visiting the local Nigretta Falls as well.