A pleasant loop through the Purisma Creek Redwoods. This hike allows you to enjoy both the lush valleys and views on the open ridgeline. Take the Whittemore Gulch Trail to the Harkins Ridge Trail Bikes are allowed on specific trails only. Open space preserve in the Midpeninsula region. The preserve is located on the weestern slopes of the Santa Cruz Mountains overlooking Half Moon Bay. The open space features not only redwoods, but ferns, wildflowers, coastal scrub, several babbling brooks which can grow to sizable creeks in the winter. The elevation can dips down almost 1600 ft from Skyline Blvd and depending on the route, some sections can be rather steep. Make sure to bring water!