While in-person docent-led activities are still on hold right now, Midpen docent naturalists have created another virtual guided hike you can experience using the OuterSpatial app on your phone or tablet. Walk 2.5 miles along the Cordilleras, Polly Geraci, Dick Bishop, and Blue Oak Trails in Pulgas Ridge Open Space Preserve and discover nine interpretive stops along the way.

This preserve is home to often-overlooked native plants – including blue oaks and fetid adder’s tongue, a delicate spring wildflower. Although often obscured by poison oak foliage and other underbrush, a large number of San Francisco dusky-footed woodrat nests are also found here. Pulgas Ridge Preserve also has a unique human history - it was the location of a treatment center for tuberculosis patients for nearly 50 years. If you look closely, you can find remnants of the buildings today.

A little bit of setup is necessary with the OuterSpatial app before you arrive at the preserve. Make sure to follow these instructions to have your best digitally guided experience. Once you've installed the app, search "Pulgas Ridge" and select the "Unique and Unusual" outing.