Black Sand Beach Bouldering

From San Francisco, take N101 and exit at Alexander Ave. making a left going underneath the 101 until reaching Conzelman Rd. From Marin, take S101 and take Alexander Ave as well making a left and immediately hitting Conzelman Ave. From both directions, continue up Conzelman Ave until it turns into a one-way road down a steep 18% grade. About 3.5 mile from the 101 there is a paved parking lot on the left. From the lot, walk down the steps to the beach and turn right and walk until you come up to the cliff and hike over the center gulley. On the second beach, you'll first come across Hidden Cove. To get to Last Cove, walk to the end of the second beach until the end. You'll notice an old Army lookout box or bunker positioned on the cliff. Scramble your way through the boulders on a mellow path heading left making your way over to the third beach. Don't go direct over the unstable looking cliff. Once on the third beach, you'll notice a chossy but promising looking cliff on the right and Last Cove is beyond that at the end.