A Michigan Nature Conservancy Site, the Mary Macdonald Preserve at Horseshoe Harbor is arguably the most beautiful Conservancy site in the state of Michigan. The preserve encompasses 1,276 acres of high-quality bedrock beaches and glade communities. To access the site, follow US-41 to the end of the pavement east of Copper Harbor. Continue east on the dirt road for .89 miles. There is a narrow two-track trail heading left (north), follow this for 1.2 miles. Park on the right (south) side and walk east to Lake Superior. There is a sign at the head of the trail. Hunting without a Conservancy-issued permit, motorized and non-motorized vehicles, rock climbing, pets, fires and camping are not permitted. The site is open to the public year round. Late summer and early fall are the best times to visit this site.