Ledson Marsh Shuttle Two Quarry Trail from Channel Drive to Lawndale Trail at Lawndale Road Professional Review and Guide
"Between 1870 and 1920, Italian stone cutters worked in the basalt quarries of present-day Annadel State Park. The cobblestones were used for paving streets throughout northern California. After the 1920s, when roads were then primarily used by automobiles, the cobblestones were no longer used for paving. This hike utilizes a shuttle car. The route begins at Channel Drive, leads to Ledson Marsh, then continues to the shuttle car trailhead on Lawndale Road. The hike travels through the quieter eastern end of the park on the Two Quarry Trail, passing old quarries en route to Ledson Marsh. (The quarries have since been reclaimed by moss.) Ledson Marsh is a popular site for observing birds. The marsh lies within a circular depression at 1,100 feet. The hike then descends from Ledson Marsh to Lawndale Road, weaving through redwood and Douglas fir forests to vistas of Sonoma Valley and the surrounding mountains."