is a difficult under the . It is considered by many to be the hardest PvE area in Guild Wars. The area contains the mining operations of the and is overrun with new types of Summit units. It is recommended if entering the Furnace for the first time to take on the quest "" and its sub-quests as they present a primer to the area. Warning: Sorrow's Furnace is an underground area, with no map available, similar to , and . A map put together by fans is available from GameAmp here.