These programs and events will be held at Mark West Regional Park and Open Space Preserve.
October 24, 2026 | 10:00 am - 3:00 pm | Mark West Creek Regional Park and Preserve
Explore one of Sonoma County's newest parklands before it opens to the public.
November 21, 2026 | 10:00 am - 3:00 pm | Mark West Creek Regional Park and Preserve
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