(Waves & Patterns) at Cello & Mardeu Construction SE of St. Helena, Napa County, CA. CA29/128 (Main St. becomes St. Helena Hwy) SE 3.05 miles from jct with Spring St. in St. Helena to the mural on the SW side of the road at 1695. (N38 28.221 W122 25.981) Photo by Mark & Clare Comstock 10-13-23.