Naharra as a starting-point on the coast (like Volocesia below) leaves no land route to Babylonia and Selevcia from anywhere on the map to the left. We may wonder whether that was the mapmaker's intention. If Naharra was originally connected further to the route network, a link to Hatris seems the logical choice. But then the present layout, and the failure to reproduce such a link, call for explanation. Alternatively, a 'vertical' Hatris-Selevcia route would not have been too awkward to introduce.