Interpretive Exhibit in Sierra Azul Open Space Preserve
Mount Umunhum is one of the highest peaks in the Santa Cruz mountain range at 3,486 feet. From here, the high point of Mount Umunhum, Mount Diablo and Mount Tamalpais can be seen as well as the valley below. On a clear day, you may be able to see as far as the Sierra Nevadas.
In November 2017, small flakes of paint containing low levels of lead were discovered near the Mount Umunhum radar tower. Out of an abundance of caution for the safety of the public, the area surrounding the base of the radar tower and pathways leading to the area are temporarily closed to public access.
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