Fyr'Un (or "The River of Life") is the river that flows from The Fountain of Life. The river is empowered by the goddess Anashti Sul (who originally introduced the undead onto Norrath) and is said to hold the power of eternal life. The undead in The Silent City feed upon this power as they await the return of Anashti Sul from her exile. The name Fyr'Un is derived from Elvish words meaning "Fyr" (life) and "Un" (all of). According to 1001 Tales of Maj'Dul, the Ewer of Sul'Dae is the "... vessel that sprang life to the Fyr'Un, the river of Life that ran through the celestial worlds".