We did this 22km loop walk and swim over 3 days – would definitely recommend going in summer because the water was delightful.
The whole loop walk is on topo map BUNDANOON (8928-1S) – we started at Jack’s Corner Kangaroo Valley and went anti-clockwise camping at Griffins Farm and on the water front at the end of Old Merlya Road track. Old Merlya Road track hasn’t been cleared in years – it is covered in logs which will slow your walk. There is an option to meet the other side of Old Merlya Road Track on the Eastern side of Lake Yarrunga 300m away instead of swimming for 2km – but it looked super loggy.
Quick and Dirty Google Map
Topo Map
