San Jose is the county seat for Santa Clara County
Twin Creeks is in Santa Clara County
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Near Mount Umunhum Road near Mount Umunhum-Loma Prieta Road, on the left when traveling north.
Recreation at Home
Remains of a swimming pool are a visual reminder of a thriving community of military families that lived at the Almaden Air Force Station between 1957 and 1980. Hundreds of people live in military housing near this . . . — — Map (db m114660) HM
Red Rock Riches
Cinnabar was highly valued as used for pigment by the Ohlone people who lived around Mount Umunhum. It contained mercury, also known as "quicksilver," which was essential for processing gold during California's Gold . . . — — Map (db m114618) HM
Near Mount Umunhum Road near Mount Umunhum-Loma Prieta Road.
In the late 1950s, the United States government procured Mount Umunhum to build the Almaden Air Force Station. an early warning radar facility that operated from 1957 to 1980. The station was constructed as part of a west coast network that scanned . . . — — Map (db m114625) HM