Waterfall of Moss at Mt Wilson is a very pleasant short canyon. Most of the abseils have slippery ovehang starts so it is classified moderate to difficult. Starting at the Cathedral of Ferns car park we follow the track down to the big bend that is the exit for Wollangambe 2. Here we swim the Wollangambe and climb a gully where a fixed rope helps with a 10 m climb. The canyon ends at the Wollangambe with the beautiful "waterfall of moss" abseil. A 200m swim down the river brings us to our crossing pint were we exit and change into dry clothes. The climb out is steep and returns us to our vehicles. Wet suits are not needed.