Rock of Ages is the geographical name of a rock ridge jutting up from the floor of Lake Superior five miles from the southern extremity of Isle Royale. On this rock the lighthouse was built and from it, took its name. This lighthouse serves both as protection and a guide to shipping to and from north shore ports.
Devils Island is the northernmost island on the western extremity of the Apostle Group With the opening of the first lock at Sault Ste. Marie in 1855, maritime traffic along Lake Superior’s south shore increased dramatically. The importance placed on this new station was evidenced by the fact that the plans called for it be outfitted with a flashing Third Order lens, an order of lens reserved for only the most critical aids to navigation on the Great Lakes.