page_title: Howell Mountains
hierarchical_section_title: Howell Mountains
caption_attribution_description: English: Twin Sisters summit as seen from the lower reaches of Suisun Valley
context_page_description: The Howell Mountains, which are also known as the Mt. George Range, are one of the California Coast Ranges. They divide the Suisun Valley on the east side, from Napa Valley on the west. Historically the southern part of the range has been referred to as both the Sierra de Suscol and as the Sierra de Napa.
context_section_description: The Howell Mountains, which are also known as the Mt. George Range, are one of the California Coast Ranges. They divide the Suisun Valley on the east side, from Napa Valley on the west. Historically the southern part of the range has been referred to as both the Sierra de Suscol (Suscol Hills) and as the Sierra de Napa (Napa Hills).
caption: Twin Sisters, seen here from Suisun Valley, is the highest summit in the Howell Mountains
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