Yungbrii, situated within the Opalok system in the Mid Rim, was a frigid and stone-covered planet. Its inhabitants, which included humans, were few in number and largely apathetic towards matters of the galactic scale. Furthermore, the planetary defense capabilities were quite limited. This world was the homeworld of Sela Trune, a New Republic Security Bureau officer, whose relatives met their death in a skirmish involving the Spice Runners of Kijimi; this incident occurred just a single month following her's departure. The planet's temperature was low.