Robert Louis Stevenson State Park is 5,272 acres and contains stunning views of Napa, Sonoma and Lake Counties from the summit of the highest peak in the California Wine Country, Mount St. Helena. On clear days, the Pacific Ocean, the Sierra Nevada mountains, Mount Shasta and Mount Lassen are also visible & in the wintertime this is one of the few hikes that can be enjoyed with snow.

The geology in this area is unique and is a part of what is known as the Sonoma Volcanics, formed between 2.6 and 8 million years ago. Visitors can see some very unique rock formations in the Palisades and Table Rock, and will be able to appreciate the scope and size of this geological formation on the climb up Mt. St. Helena.