From EverQuest2.com:
Established by Dain Frostreaver the First after the coldain were driven from their city in the Crystal Caverns, Thurgadin has served as the home for the coldain dwarves for hundreds of years. Nestled within the northnernmost mountains of the Great Divide, Thurgadin has protected the coldain from relentless attacks, and acted as a welcoming and secure place for many adventurers who visited Velious in the past. However, the noble city was always under threat, as the Kromrif were determined to wipe the coldain off the face of Velious.