Lower Ritchey Canyon Loop: Redwood – Ritchey Canyon Trails Professional Review and Guide
"The 1,900-acre Bothe-Napa Valley State Park stretches along perennial Ritchey Creek and Mill Creek, reaching west into Sonoma County. The popular park offers camping, picnicking, swimming, horseback riding, and hiking on more than 10 miles of trails. Hikes 18–20 follow the lush riparian habitat along Ritchey Creek, a tributary of the Napa River, in a redwood-lined drainage. This hike loops around the lower portion of the park and visits the old Hitchcock homesite, dating back to the 1870s."