There’s no shortage of things on old maps that turned out to be fictional. Regions such as the Mountains of Kong or the continent of Lemuria dot antiquated maps, and the obviousness of their fictional nature seems quaint today. However, some fictional features of old maps were more subtle. Benjamin Morrell was an American sailor in the early 1800s who, in his memoirs, A Narrative of Four Voyages, invented islands out of whole cloth, most prominently Byers Island in the Pacific, and New South Greenland, a nonexistent region he placed off the coast of Antarctica.