The River caves canyon is located just north of Newnes plateau and south of the Wollemi national park. You will require a 4wd to get to the trail head, especially when it is wet. Alternatively if you're game if you drive carefully you can get a 2wd in a fair amount of the way. The start of the dirt track in begins at the zig zag railway onto old bells line of Rd(a dirt road). Follow this road until a T-intersection where you turn right onto glowworm tunnel Rd(8.7km). Follow this Road until you reach Deep Pass Trail on your right(11.4km). Take your 2nd left into Mount Cameron Trail(640m). Then take your 2nd right onto Mount Cameron Trail(560m). Follow Mount Cameron Trail until you reach the trail head(5.2km) where you will hit a dead end with room to park.
You will see a metal sign with "Wollemi wilderness walkers only" written on it. This marks the start of the River caves canyon walk down to Budgary creek. Follow the trail for 300 meters where you will notice a trail off to your right that starts the decent. This downhill trail will take you all the way down to the canyon, once you reach the water you've reached the starting point. From the water take your left and head upstream into river caves canyon.
There is no clear path the take up through the canyon as most of the walking is done through the water. Take your time and be cautious climbing over slippery rocks due to the damp environment. You will be getting wet along the way, not completely submerged but wet enough to consider taking a dry change of clothes. For foot ware we suggest getting some water/aqua shoes, otherwise an old par of joggers will do. It is wise to leave your dry shows are the start of the canyon and put them back on when you get back. Since the river caves canyon isn't a loop you will be coming back to where you started.
The Canyon is fairly remote so make sure to take emergency equipment. Such as first aid, beacon(PLB) and a thermal blanket(in winter).