Holcomb Creek is a short, extremely difficult route that can be added to Dishpan Springs and John Bull to make for a longer adventure. There is an interesting side trail to Lower Largo Flats that you'll definitely want to check out. No green-sticker vehicles are allowed on this route.
Go north on Green Valley Road from Hwy. 18 near mile marker 34.5. After 2.7 miles, turn left on F.S. 3N16 following signs to Crab Flats Campground. Ignore lesser side roads continuing on F.S. 3N16. At 6.5 miles stay right on F.S. 3N16 as you pass Crab Flats Campground. Reach F.S. 3N93 on right at 9.2 miles.