In the year T.A. 2, at the Gladden Fields, King Isildur and his three eldest sons (Ciryon, Aratan and Elendur) were ambushed by Orcs. Isildur attempted to escape by jumping into the Anduin, using the power of invisibility of the One Ring, but the Ring slipped from Isildur's finger and sank to the bottom of the river. Isildur landed on the other bank of the river where he was killed by Orcs looking for survivors of the ambush. Isildur's squire Ohtar saved the shards of Narsil from the enemy horde; Isildur's sons were killed during the battle. This incident would become known as the Disaster of the Gladden Fields.
It was here, twenty-five centuries after the ambush, that the Stoorhobbit, Déagol, retrieved the One Ring from the Anduin and was killed by his relative Sméagol, who became the creature Gollum.