Marin Open Space Trust (MOST) News updates are about current and past open space projects we participate in to protect Marin’s greenbelt. MOST is a local land trust and 503(c) non-profit. Marin Open Space Trust works with local communities to protect and preserve Marin’s beautiful open space for the enjoyment of today’s residents and visitor as well as ensuring it will be there for future generations. This includes efforts stemming from our own initiatives as well as partnerships with like-minded community members and organizations throughout Marin. Subscribe to our newsletter to learn about new projects.