the Decrepit Flow (WoW)  

The Decrepit Flow is a devastated area that comes out of Icecrown in the northwest region of Crystalsong Forest. The waters from here drain and eddy through the Twilight Rivulet and down to the Mirror of Twilight. The southern beaches and lakebed are simply covered with the rotting skeletons of the fallen and ruined siege engines from past battles.

Wrath of the Lich King required!