I have always been interested in looking for Budawang canyons. If you think about how the blueys canyons formed you might be able to find similar spots. I havent been able too yet but it has been a pretty half arsed effort so far. Another one is Marble Arch near the Big Hole south of Braidwood. Very touristy so wouldnt expect much of a trip. also been intersested in the Duea river NP. steep country with decent vert fall in there so might be some kanagra type canyons. lets us know what you end up discovering.