Babylonian Map of the World depicts marsh
The map
The map is circular with two outer defined circles. Cuneiform script labels all locations inside the circular map, as well as a few regions outside. The two outer circles represent water in between and is labelled as  idmaratum "bitter river", the salt sea.
Babylon north of center of the map; parallel lines at the bottom seem to represent the southern marshes, and a curved line coming from the north, northeast appear to represent the Zagros Mountains.
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