Johnston Falls, a beautiful waterfall on Wheengee Whungee Creek, plunges into a sheer sided amphitheatre in Shamash Deep.
Large boulders are strewn everywhere, a hint of the devastating forces at work when the creek is in flood.
For walkers, the only way round the falls are some very steep scrambles further downstream. Even there, the surface can be treacherous. Animal pads provide the safest routes across this steep, rugged landscape.
Views upstream from high on the western slope show glimpes of Wheengee Whungee Falls and the cliffs on it's eastern wall. For someone trying to walk upstream, following the creek, the barriers would seem immense.
A number of researchers have concluded that Francis Barrallier's 1802 Expedition was turned back by Johnston Falls rather than by Barralliers Falls on Christys Creek.
Kanangra-Boyd National Park (NSW)