2015 Map of The Geysers

About this map

Mercuryville and The Geysers sit at the heart of this geologically active landscape within the Mayacmas Mountains, where the intersection of Lake, Sonoma, and Mendocino counties creates a complex terrain of steep canyons and thermal features. The area's history of mineral extraction and geothermal energy is evidenced by the names like Devils Den Canyon and Hot Springs Cr. Small settlements such as Caldwell Pines, Glenbrook, and Black Oaks are linked by a network of winding roads including Bottle Rock Rd and Geyser Resort Rd. Peaks like Mahnke Peak and Geyser Peak overlook a watershed defined by Big Sulphur Cr and its numerous tributaries. The map details the transition from high valleys to deep canyons, showing the rugged physical geography that has long defined human activity and settlement patterns in this part of the California Coast Ranges.