Closures in Sierra Azul Open Space Preserve:
- Barlow Road (trail) will be closed between Woods Trail (part of the Bay Area Ridge Trail) and Mt. Umunhum Road beginning on Tuesday, September 12 for the duration of construction on the Mount Umunhum Summit and Road.
- Please note that the Mount Umunhum and Mount Thayer areas are CLOSED areas. Anyone found in these areas will be cited.
- Areas that are adjacent to Mount Umunhum and Mount Thayer have been declared Temporary Closed Areas. Trespassers will be cited. Please refer to the posted map for details. Other closed areas within Sierra Azul Preserve are shown on the Preserve map.