Harystn was a village located to the south of Jairth, in the Sylmahn Gap, in Old Province. It lay along the Guarnak-Sylmahn Canal. (map)

During the Siddarmark Civil War, it was destroyed early in the conflict by the rebels, with its mayor and his family being executed in the town hall. Later, in May of the Year of God 896, it was the location of the Harystn Ambush, where the Republican forces defeated a notorious company of Temple Loyalists. (MTAT)