St. Mary Lake is located on the east side of Glacier National Park along the Going-to-the-Sun Road. The 10-mile long lake offers a variety of wildlife viewing opportunities include elk, mule deer and both grizzly and black bears. In the warmer seasons, wildflowers such as Indian paintbrush and lupine grace the hillsides; in the fall, the hillsides burst with oranges and yellows of the aspens, while winter provides cross-country and snowshoeing opportunities.
As you travel on the Going-to-the-Sun Road, watch for numerous pullouts that provide opportunities to see Jackson Glacier, hike to 100-foot Virginia Falls or photograph Wild Goose Island. Just past the East Entrance, the St. Mary Visitor Center provides opportunities to meet staff rangers, learn about the park and see "the Backbone of the World" (as it's called by the Blackfeet) through eyes of the Native Americans who call Glacier home.
Another great way to experience the lake is via a scenic boat cruise. Glacier Park Boat Company provides tours June through September.