There are several places around Cairns in Far North Queensland to go canyoning that many people don't know about it. Several of the creeks around the area have been bolted where there are no safe natural anchors to rappel from.
Find your local canyoners and ask for beta on the FNQ Canyoning Facebook group.
See also the local commercial canyoning operators - Cairns Canyoning
Here's a listing of canyoning places to explore around Cairns: