Monument Peak

Monument Peak is a mountain summit in the Diablo Range that rises to 2,594 feet (791 meters). From the top, hikers can see across the landscape spanning Alameda and Santa Clara counties.

The summit changed significantly in 1988 when a broadcasting antenna was built on its peak. This structure has remained a defining feature of the landscape ever since.

The summit marks a natural boundary between two counties and serves as a geographical landmark that locals recognize and use for orientation. People regularly visit this place for hiking and outdoor recreation.

Access to the summit is through a hiking trail starting at Ed R. Levin County Park, covering about 10 kilometers round trip. The climb is steep and requires good fitness and proper footwear.

A 184-meter-tall antenna stands on the peak and has been transmitting television signals across a wide area for decades. This structure is among the tallest built forms in the region and dominates the summit profile.

Location: California

GPS coordinates: 37.48462,-121.86573

Latest update: December 10, 2025 20:01