This large, generally placid watercourse descends from the grassy plains of the High Country (where it may well feature in legends and treasure finds not covered here) cutting across the Vast to reach the Sea of Fallen Stars at Ravens Bluff. Many springs rise in the southern Vast to join it, and their sources are cloaked in thick stands of trees which have hidden many an outlaw, treasure, and reclusive mage over the years. It is said that more new and terrible spells have lashed down the Fire River valley than anywhere else in the Realms since the fall of Netheril. Some of these wizards' secrets have died with them-including where their magical items and spellbooks are hidden. The oldest and most powerful mages have extra-dimensional residences, with helmed horrors and other guardians, magical traps, and gates linking them to other places in the Realms and to other planes; most of the wizards have simpler hiding-places.

There's also a smugglers' tale from the early days of Ravens Bluff. Barges of goods were often brought into the city by night from ships standing well out in the Reach. On one occasion there was treachery and open spell-battle on the docks. The barges hastily sculled away, up the river. In the darkness and confusion, at least one barge sank and presumably still lies somewhere in the mud of the river bottom with its cargo of thousands of crated, newly minted gold pieces.