To find it, check your odometer and drive 1.8 miles east from the parking lot at the east end of Tenaya Lake. (3.7 miles west from the official Cathedral Lakes/JMT trailhead in Tuolumne Meadows.) Stop at the unmarked gravel parking area on the right (south) of the road (hard to see, has space for half a dozen cars).
great suggestion - I may visit this trail either as a warmup hike this summer, or even use it as entry point - but what "Trailhead" permit quota would I need to worry about if going in overnight? This isn't really a trailhead. I never really thought about that, what if I want to start an overnight hike in a place that isn't really quta controlled? Will they just add me to the nearest official Trailhead (Tenaya Lake), even if you don't use that trail and end up somewhere totally different?
This would be a great alternate starting point for my summer "High Route," taking the bus to Tenaya from Tuolumne, having it drop us off a the parking lot, and then going into the wild.