The Marin County Board of Supervisors sent a letter this week to Golden Gate National Recreation Area about a proposed reservation system and altered shuttle service at Muir Woods National Monument. Supervisors commended the park for abandoning a proposed parking lot on Panoramic Highway—a plan sharply opposed by many southern Marin residents—saying that parking should, on the contrary, be reduced. Echoing the sentiments of a vocal group of residents, supervisors asked the park to consider…