United States, California, Sonoma, Sonoma County: Mayacmas Mountains, Geyser Rock, west of Whispering Pines, northeastern Sonoma County. (Elevation estimated by label maker using Google Earth.)
38.814167 -122.769167 +-247m. WGS84
38° 48m 51s N; 122° 46m 9s W
1119 meters
3670ft
Greywacke bald. Biennial | Access Database Number (Deprecated): UCD158786