Eastfold

The Eastfold was a region of Rohan which bordered with the Westfold via the Snowbourn River on the west and bordered with Anórien in Gondor to the east.
The areas of the Eastfold that were not within the White Mountains were tall grasslands and had a modest climate. The main parts of this land was the historic region of the Folde which hosted the Rohan's originally capital of Aldburg was part of this land, as with the Irensaga, Dwinorberg, and Dunharrow. The Great West Road that ran from Isengard through Gondor and then into Harad passed through the Eastfold.
Hirgon, an Errand-rider of Gondor, braved his way through the Eastfold to bring the Red Arrow to Théoden at his camp.