What's so special about St. Joseph's Hill? It's one of the only Midpen preserves with serpentine bedrock, serpentine soil, and thus a serpentine meadow, which supports adapted native grasses and flowers. Docent Naturalists Frances Reneau and Helena Cohen will guide you on a leisurely-paced hike along the Jones, Manzanita, and Serpentine trails for a loop around the summit and to witness the serpentine meadow.
Meet at the County boat launch parking lot next to the Lexington Reservoir Dam. From southbound Highway 17, take the Bear Creek Road exit, cross over the highway, and go 0.4 miles north on Highway 17 to Alma Bridge Road. Follow Alma Bridge Rd. over the top of the dam. Continue beyond the dam as the road jogs to the right. Turn right into the parking lot just before the road veers to the left. A Santa Clara County Park parking fee is in effect.