Rohan, Middle-earth

Rohan is a fictional kingdom of Men in J. R. R. Tolkien's fantasy setting of Middle-earth. Known for its horsemen, the Rohirrim, Rohan provides its ally Gondor with cavalry. Its territory is mainly grassland. The Rohirrim call their land the Mark or the Riddermark, names recalling that of the historical kingdom of Mercia, the region of Western England where Tolkien lived.

Tolkien grounded Rohan in elements inspired by Anglo-Saxon tradition, poetry, and linguistics, specifically in its Mercian dialect, in everything but its use of horses. Tolkien used Old English for the kingdom's language and names, pretending that this was in translation of Rohirric. Meduseld, the hall of King Théoden, is modelled on Heorot, the great hall in Beowulf.

Within the plot of The Lord of the Rings, Rohan plays a critical role in the action—first against the wizard Saruman in the Battle of the Hornburg, then in the climactic Battle of the Pelennor Fields. There, Théoden leads the Rohirrim to victory against the forces of Mordor; he is killed when his horse falls, but his niece Éowyn kills the leader of the Ringwraiths.

Tolkien's own account, in an unsent letter, gives both the fictional and the actual etymologies of Rohan:

Rohan is stated (III 391, 394) to be a later softened form of Rochand. It is derived from Elvish *rokkō ‘swift horse for riding’ (Q[uenya] rocco, S[indarin] roch) + a suffix frequent in names of lands [e.g. Beleriand, Ossiriand]. ... Rohan is a famous name, from Brittany, borne by an ancient proud and powerful family. I was aware of this, and liked its shape; but I had also (long before) invented the Elvish horse-word, and saw how Rohan could be accommodated to the linguistic situation as a late Sindarin name of the Mark (previously called Calenarðon 'the (great) green region') after its occupation by horsemen. Nothing in the history of Brittany will throw any light on the Éorlingas. ...

In Tolkien's Middle-earth, Rohan is an inland realm. Its countryside is described as a land of pastures and lush tall grassland which is frequently windswept. The meadows contain "many hidden pools, and broad acres of sedge waving above wet and treacherous bogs" that water the grasses. The cartographer Karen Wynn Fonstad calculated Rohan to be 52,763 square miles (136,656 km²) in area (slightly larger than England).

Rohan is bordered to the north by the Fangorn forest, home to the Ents (tree-giants) led by Treebeard, and by the great river Anduin, called Langflood by the Rohirrim. To the northeast are the walls of Emyn Muil. After the War of the Ring, the kingdom is extended northwards over the Limlight to the borders of Lothlórien. To the east are the mouths of the River Entwash, and the Mering Stream, which separated Rohan from the Gondorian province of Anórien, known to the Rohirrim as Sunlending. To the south lie the White Mountains (Ered Nimrais). To the west are the rivers Adorn and Isen, where Rohan borders the land of the Dunlendings. To the northwest, just under the southern end of the Misty Mountains, lies the walled circle of Isengard around the ancient tower of Orthanc; at the time of the War of the Ring, it had been taken over by the evil wizard Saruman. The area of the western border where the Misty Mountains and the White Mountains drew near to each other is known as the Gap of Rohan.

The capital of Rohan is the fortified town of Edoras, on a hill in a valley of the White Mountains. "Edoras" is Old English for "enclosures". The town of Edoras was built by Rohan's second King, Brego son of Eorl the Young. The hill on which Edoras is built stands in the mouth of the valley of Harrowdale. The river Snowbourn flows past the town on its way east towards the Entwash. The town is protected by a high wall of timber.