Mountain dwarves live under the mountains of Thessan. Less amicable to life on the surface than hill Dwarves but generally not as far underground as deep Dwarves. They stand slightly shorter than other dwarves and average about 4-1/2 feet tall. They have lighter skin and more vibrantly coloured hair than hill dwarves, but the same general appearance.

Mountain dwarves put more stock in the old ways of Kolzamor and Kalzomar. Having never broken from their ancient traditions, mountain dwarves hold to their ancient allegiances with the empyrean titans and count many of the more amicable giants as their allies. They tend to favour heavy armor and weapons and take great pride in their hair and beards. Mountain dwarves dislike dragonpowder weapons, siege weapons and engines of any kind. The mountain dwarves also show disdain for the grey elves and miners of other races, viewing the stone of Ord as the work of the titans and therefore, their heritage.

Mountain dwarves are the descendants of clan Crûsgar which has branched into the Dankil, Ogrescrush and Stonecleave families and several smaller families since then.

Mountain dwarves are slightly more susceptible to sunburn than humans and commonly wear hoods or wide brimmed hats if they are forced to be in the sun for prolonged periods of time.