The road remains rolling with mostly good shoulders and occasional narrow spots. 19.9 Glenhaven is a small tourist community with lodging and gas station available. Signs of these projects are at various locations throughout Lake County. 23.2 Pass Wigeon Bay. 23.6 Enter the town of Clearlake Oaks.
Many facilities are available including gas stations, restaurants, quick stops and a park.
24.5 High Valley Road takes off to the left. Continue on Highway 20 to Orchard Shores and Sulphur Bank Drive. 25.5 Turn right on Sulphur Bank Drive, which is a narrow but little used road. It climbs slowly at first and then becomes steep. Pass the entrance to the Elem Indian Colony, a Pome Indian village, and the entrance to Sulphur Bank Mine, an abandoned quicksilver mine.