The South-Western Wilderness mine, also known as the Wilderness Skeleton/Coal mine, is located in level 12-14 Wilderness, just north of the Black Knights' Fortress and south of the Dark Warriors' Fortress. This mining site is a very rich coal mine, but players have to rely on running to safety or teleporting if attacked by player killers. This mine is recommended when the Mining Guild or other coal sites are crowded, or for players with a high combat level.