Feature type: name, no symbol
Segment grid: 4A2
On the ground (BAtlas 20 D2), this route does indeed cross the Arrabo Fl., but there is no city at that point. On the route above, however, lies the city of Arrabona. Thus in principle it might be more appropriate for the map's names "Arrabo Fl." and "Arrabone" to be transposed; but there is no knowing if they have been switched in error by a copyist.