Bothe nestles just about a mile north of St. Helena. Although located just off of Highway 29 (128), you can easily miss this gem. You're trying to look for the sign that is sorta hidden in the bushes on the right side, as you go North. The sign above is looking from the South, so it looks so visible in the picture.
The park is a find. Nice, friendly & knowledgeable Park Rangers. They don't know whether the part will be open any further, due to the CA state budget (as of Aug 2009). But you might as well enjoy the park, as almost nobody walks it's peaceful paths. Try the Ritchey Trail, which runs along (big surprise) Ritchey Creek. When we were there, we could have had any campsite that was nice.
........from Wei's iPhone