No single track but some amazing scenery, The Dusy Ershim Jeep Trail. East of Fresno I was up there rock climbing and just did a little bit of riding. Great place to take a fishing pole.
I've done some of this, may try to finally run the whole thing this year. Be aware that it's pretty remote and rugged, I don't see getting through it with less than a full suss bike, or a lot of hike-a-bike.