Unfortunately there is not much information available about the exact location this picture was taken and Lake Superior is pretty large, so there’s plenty of shore, 2,726 mi/4,387 km to be exact. Lake Superior is generally considered the largest freshwater lake in the world by surface area (82,100 sq. km/31,700 sq. mi) and third-largest freshwater lake by volume (after Caspian Sea and Lake Baikal).
Photograph via Dirtyflowerz on reddit