FR301D forms a loop with FR301 from Old Walnut Canyon Road to the Fisher Point trail access. It provides a better alternative during wet weather than FR301, as it does not have as many mudholes and is generally an easier road in soaking wet weather. Please note there is a gate at Walnut Canyon Road; after you pass through, it needs to be closed behind you. It is unmaintained with ruts, and 4WD maybe necessary.
Camping is not allowed in the FR301 area nor on the north side of Walnut Canyon.