Pike County Gulch

Pike County Gulch is a coastal valley in Marin County, California, United States, which is associated with a small stream. It is located between Wilkins Gulch (to the northwest) and Audubon Canyon (to the southeast).

The stream descends the western slope of the Bolinas Ridge, crosses State Route 1 about 3 mi north of Stinson Beach, California, and drains into the northern tip of Bolinas Lagoon.

The gulch contains an ore vein 4 ft thick containing pyrite, located a mile (1.6 km) south of the Union Gulch Mine.