Start: Go to the car park at the end of Bellbird Road in Yarra Bend Park.
(S/E) Leave the car park walking towards the information board giving some instructions to explore the area. The right path takes you alongside the Yarra River, which you keep to the left as you go, but not too far away.
After about 500 m, you'll start to hear the flying fox, and therefore see them hanging all around. The walk is quite shady and quiet along the riverside.
(1) Near the motorway, turn around and go back the other way. (S/E)