Usal beach is the southern terminus of the 80-mile Lost Coast trail starting from Mattole river. See the links to the five segments here: komoot.de/highlight/136382 On the northern side of Usal creek is a campground and parking area used by hikers. The 10+ mile dirt&gravel road from Hwy1 into Usal is rough and only advisable in dry weather due to some muddy steep sections.