This cache is located on an island in an interesting part of the Naas River. The river splits into many ways to flow in and around the rocks and trees in the area. I forgot to take a spoiler photo so resort to the hint if you find the coordinates don't reveal a cache.
To do the whole series leave one car at Caloola Farm and then set off from Mt Clear camp ground.
It took us 8.5 hours, including the Max and Bert cache.
Thanks to mtbikeroz for accompanying me on this cache laying expedition.
FTF goes to ZsaZsa7, McPhan and Mrs Winglen