Best approached by kayak across Lake Gunn, walking around is not recommended due to thick forest and swampy ground.
Access on the TR.
Lots of absiels in powerful flows. Extremely hard rock: serpentine and diorite, so if you’re taking a drill, (which you should) take plenty of spare drill bits and extra batteries!!!
First descent in 2007 by Annette Phillips, Alian Rohr, Tristain Barette and James Spiers.
They spent the night in the canyon, 3 pitches from the end, after a long day using a hand drill to get down!