Locations, names and routes of the Periplus of the Erythraean Sea (1st century CE).
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self-made, background topographical map from Wikipedia Commons <a href="//commons.wikimedia.org/wiki/File:Topographic30deg_N0E60.png" title="File:Topographic30deg N0E60.png">Image:Topographic30deg N0E60.png</a>