"Mountain Dwarf" is a subrace in Pillars of Eternity.
It is one of the Sub-races you can choose for the Dwarf race
You choose your sub-race during Character Creation
Description[edit]
Mountain Dwarf:
Mountain Dwarves (Aptapo) originated on the continent to the east of the Dyrwood and have spread through the area several times.
Unlike the similarly diminutive orlans, who are frequently subjugated, the Aptapo have always directly fought back threats posed by larger kith and opted to fortify their residences rather than move on.
Mountain dwarves are common in the Vailian Republics but not seen as often in the Dyrwood and Readceras.