Is a short 200m canyon located on the Airly - Genowlan mesa. The top end of the canyon is 460m east of the communications tower, the lower end, accessed from the 4WD track, is 560m east of the tower. Colin (Col) Maxwell Ribaux, former local land owner, had set up a number of successive handrails and planks within this canyon. The Grotto is a small waterfall and would have been the end of this canyon, if it were not for the ladder Col constructed against a tree to negotiate the exit out of this canyon. Note: the ladder was removed in May 2013 by NPWS.