South Keyhole Canyon Falls

Take the Sea-to-Sky Highway (99) to the town of Pemberton, then at the stoplight (at the Petro Canada station) turn north onto Pemberton Meadows Road and proceed through town. In 0.8km bear left at the roundabout, cross the railroad tracks, go two blocks, then turn right at the T-intersection, still following Pemberton Meadows Road. Continue for another 23.6 kilometers, then turn right onto the Lillooet River Forest Service Road. Reset your odometer and prepare for a long, dusty drive. Keep left at all major junctions (ignore the closed Meager Creek Forest Service Road at the 38km point) and continue 42.5 kilometers up the Lillooet River FSR to the Keyhole Hot Springs trailhead, which may or may not be signed. Shortly after the trailhead, the road has recently been reconfigured due to washouts, forest fires, logging activity and the recent construction of the Upper Lillooet Hydro Project, and as a result the current configuration of the continuation of the Lillooet River FSR doesn't match what maps show. Continue for another 200-300 meters to where the road makes a sharp switchback and starts climbing, with a spur road branching to the left. Take this spur road (which as of May 2018 was heavily water barred, so high clearance vehicles are mandatory) and continue for another 600 meters to a clearcut at the top of a steep hill just after the second of two stream crossings. The falls will be clearly visible across the valley from this point.
When the Keyhole Hot Springs trail is open (again, check with the BC Forestry Service to find out if the bear activity closure is still in place), the falls can be seen from the trail about halfway to the hot springs, but the bottom of the falls may be partially obscured by bushes.South Keyhole Canyon Falls is a narrow plunging waterfall which launches itself off a sheer cliff of volcanic bedrock lining the side of Keyhole Canyon downstream from Keyhole Falls and Hot Springs in the upper Lillooet River valley. The falls drop over a slightly undercut section of cliff, allowing them to form a truly free-falling waterfall dropping into the canyon. When surveyed in May of 2018 we were unable to get close enough to the falls to take an accurate measurement, but the drop appears likely to be in the 45 meter (about 150 feet) range. The falls are at worst partially visible from logging roads across the valley (and clear views can be found by following spur roads through clear cuts), and a closer view of the falls can be had from the trail to Keyhole Hot Springs, but as of May 2018 the trail had been closed indefinitely due to the presence of multiple habituated bears living in the immediate area which have exhibited very aggressive behavior towards humans (check with the BC Forestry Service for more information on the trail status) - due to this situation it's best to just view the falls from the road where it's visible.
The drainage area for the unnamed stream which produces this waterfall is fairly small, covering roughly 4.5 square kilometers (about 1.7 square miles), however the bulk of the creek originates in the melt of a modest glacier situated on the north face of Plinth Peak, which ensures a consistent volume of water present in the stream throughout the summer months.