Battery O’Rorke trailhead, 2018 Published February 17, 2018 at 1000 × 750 in Guns and ghosts: Rambling through the ruins of early 20th century gun batteries in California’s Marin County ← Previous Next → Looking north towards Battery O’Rorke. The distant Headlands hills were once dotted with small dairy farms. Photo: Caroline Ross / The Road Home