https://www.gaiagps.com/hike/224655/crab-flats-campground-via-3n08-and-3n16/
Crab Flats Campground via 3N08 and 3N16 - California | Gaia GPS
This is a moderate one way trail in San Bernardino National Forest. This trail goes by Lightning Spring and Crab Flats Campground.
crabflatscampgroundviacalifornia