Help remove invasive plants like French broom and bristly ox-tongue from Owl Canyon!

We will be working in a flat area at the base of the canyon.

This event is hosted in partnership with the City of Brisbane and Brisbane’s Open Space & Ecology Committee and in honor of Earth Day! Please sign up below.

San Bruno Mountain Ecological Reserve-Owl Canyon

1) From Bayshore Blvd, turn onto Valley Drive, the entrance to Crocker Industrial Park in Brisbane.

2) Drive down Valley Drive and turn left at the stoplight at the intersection of Valley Drive and South Hill Drive

3) Drive a very short distance on South Hill Drive; as the road begins to curve, immediately after a pedestrian crosswalk, you'll see a steep driveway on your left with potholes. Turn into that steep driveway and drive up to reach Quarry Road

4) At the top of the driveway, keep driving down the road. The first canyon on your left is Buckeye Canyon—continue past that on Quarry Road until you reach the base of Owl Canyon. Park parallel on the side of Quarry Road.