A region of Mithgar once ruled by the Black Mage Modru. It was occupied entirely by the Foul Folk, and was a corrupted, unpleasant place.
During the Winter War, it became the center of the Dimmendark, due to the presence of the Myrkenstone. During this period, Princess Laurelin of Riamon was kept captive, and Vanidor was murdered during a torture session. However, Gron was later conquered by the forces of King Galen.
Even centuries later, Gron seemed to be uninhabited by anyone.