Crayfish Creek is very pretty with a short constricted canyon section and otherwise open views of cliffs. There’s a couple of hours of creek walking which is generally quite shallow (and sometimes slippery) with a couple of short sections neck deep. Wetsuits are not required but some thermals/woollens could be handy. Entry and exit has some steep off track walking as well as defined tracks. Off Ridgewell road in Blackheath.