Púkelhyrne (Éo."Demon Peak"; S."Rhas Drúath") was the Rohirric (post-T.A. 2510) name of the high mountain ridge of the Ered Nimrais opposite the Arheledh in Haerawreigion, just west of the Rúdhonir. The formation actually consisted of two parallel ridges rising to a height of 13.000 feet, which sealed off an inaccessible valley. Local legend held that Púkelhyrne was (or had once been) a refuge for the Drughu, though none had ever ventured there to find out.