Angwin · Napa County · CA
Big Boulder is a 0.2-mile intermediate (blue) trail near Angwin, in Napa County, CA. It climbs 73 ft and descends 94 ft, between 1,648 ft and a high point of 1,705 ft. The surface is dirt. Mapped for hiking, trail running, mountain biking.
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Trail data © OpenStreetMap contributors (ODbL). Elevation: USGS 3DEP. Open the interactive map for routing, weather, and offline use.