Mechanically-speaking, Duregar in Pathfinder: Domain are identical to those found in the Pathfinder Advanced Race Guide p186. You can also find Racial Information on them on the d20pfSRD website.
XP Cost: 8,000
Tulun Duregar: Also known as “Deep Dwarves” and “Dark Dwarves”, Duregar are a species which evolved from the ancient subterranean people known as the G’hur. Those G’hur who ventured above ground eventually became modern day Dwarves, and those who remained deep beneath the earth became Duregar. Master craftsmen with dour, no-nonsense practical attitudes, Duregar make up one of the three prominent underground races who rule the lands of Mor-Denoch. Of the three the Duregar represent tradition, stability and defence, and it is they who are responsible for the almost unfathomably complex and well-defended underground cities of the deep kingdoms. With a long-standing rivalry with their Dwarves cousins who they see as “traitors to their heritage”, Duregar are only more passionate about manufacture and the accumulation of wealth than thwarting their once-brothers. Ironically, Dwarves are interested in much the same thing, yet these two races will never truly see eye-to-eye.
Almost physically identical to Dwarves, Duregar are recognizable by their slate-grey skin, white hair and red or orange eyes.
Place of Origin: It is a rare Duregar who leaves the “world below” of Mor-Denoch, and almost all Duregar are born and raised there. Some go adventuring but not often to the surface without some truly necessary reason.