Rhovanion.

Rhovanion, another vaguerly described area. But from the stories where the Northmen ( later the Rohirrims ) of Rhovanion appears and the description of their living places i may conclude that Rhovanion was the area of the East Bight into Mirkwood and the plains South-West to Emyn Muil bordering the Brown Lands in the West and far into the East maybe as far as to Dorwinion and the Sea of Rhûn. In the South it may have extended to Dagorlad and the Dead Marshes. North of Rhovanion was Wilderland.