1955 Map of Ketchikan A-4

About this map

The Mary Island Lighthouse stands as a vital navigational aid in the southern reaches of the Alexander Archipelago, overlooking the complex intersections of Revillagigedo Channel and Felice Strait. This mid-century coastal survey documents a rugged maritime landscape where the small settlement of Ham on the western shore of Revillagigedo Island contrasts with the uninhabited peaks of Behm Mountain and Backbone Mountain to the east. The waterway system is defined by deep passages like Danger Passage and Cat Passage, which separate Mary Island and Cat Island from the larger landmasses. Notable land features such as Mound Hill and the ridges of Alava Ridge provide high-ground markers for mariners navigating the treacherous waters around Bostwick Reef and the Hog Rocks.