Formed in the remnants of the interplanar chasm created by Deach during his first invasion of Merilleon, the Scar is a river that flows through the The Sullied Waste (Armalla) from the Black Mountains to the Asylian Ocean. It is sourced by rifts to the elemental plane of water that were created as a means to flood Deachs chasm to end his invasion.
The river is bordered on both sides by hills that were formed by the creation of the chasm itself. It ends at the ruins of the dam that kept the waters of the Silent Sea from spilling into the chasm.