Towing a 16′ trailer meant we couldn’t drive through Glacier National Park via the famous Going-to-the-Sun Road, so we took the long route around the park to East Glacier.  The plan was to camp at St. Mary; most campgrounds along the Going-to-the-Sun Road were already closed, St. Mary was in primitive status ($10/night!), it served as the perfect base to cycle and explore the trails along the road, and it was the launching point for our next destination at Many Glacier. A quick photo stop just outside of Two Medicine: We pulled into St. Mary Campground by late afternoon on a…