Ring of Isengard

The name Isengard refers to more than one character, item or concept. For a list of other meanings, see Isengard (disambiguation).

The Ring of Isengard refers to the rocky walls that surrounded and protected the Tower of Orthanc. They grew out of the wall of a valley at the southern end of the Misty Mountains, and were worked by the early Gondorians so that they formed a complete defensive circle around the tower.