The Elivagar is the name given collectively to the eleven rivers whose source is the spring Hvergelmir, which is located in the heart of the realm Niflheim. The rivers flow south into Gunninga-Gap and their names are: Fimbulthul ("the bubbling"), Fjorm, freezing Gjoll, Gunnthra ("the defiant"), storming Hrid, Leipt which streaks like lightning, fearsome Slid, Svol ("the cool"), Sylg, broad Vid and Ylg.