Scarlet Monastery

The Scarlet Monastery is one of the last strongholds in the world belonging to the fanatical Scarlet Crusade. The Scarlet Bastion within the ruins of Stratholme, the town of Hearthglen, the town ofTyr's Hand and the Scarlet Enclave all fell during the last years. Located in the northeast corner of the blighted Tirisfal Glades, the Scarlet Monastery was once a cathedral to the Light, taken over by zealots.

History
From Blizzard's Official World Dungeons site:
 * The Monastery was once a proud bastion of Lordaeron's priesthood - a center for learning and enlightenment. With the rise of the undead Scourge during the Third War, the peaceful Monastery was converted into a stronghold of the fanatical Scarlet Crusade. The Crusaders are intolerant of all non-human races, regardless of alliance or affiliation. They believe that any and all outsiders are potential carriers of the undead plague - and must be destroyed. Reports indicate that adventurers who enter the monastery are forced to contend with Scarlet Commander Mograine - who commands a large garrison of fanatically devoted warriors. However, the monastery's true master is High Inquisitor Whitemane - a fearsome priestess who possesses the ability to resurrect fallen warriors to do battle in her name.