Overview Mavreeso Campground is located on the West Dolores Road (Forest Road 535), which branches north from Colorado Highway 145 about 20 miles northeast of Dolores. It is a great place to relax and enjoy the outdoors by hiking, biking and fishing.Recreation The West Dolores River offers fishing for brown, rainbow, cutthroat and brook trout. A parking area is available for fisherman. Several parcels of private property are found along the river. Visitors are asked to stay on the trail and not