Located about one mile west Grand Marais; the best place to view is from the trail beginning at the Sable Falls parking area. Another access point for the dunes is from the North Country Trail, one-quarter mile east of the Log Slide. Please stay on the trail as the dunes vegetation is fragile. Five square miles of Grand Sable Dunes are perched atop the 300-foot high Grand Sable Banks. Left by enormous glaciers, the Grand Sable Dunes dwarf comprehension. A portion of the Grand Sable Dunes is set aside as a Research Natural Area.