At the mouth of Raven River is the large trading center of Kolbruk owned by the Altnaus family. It started out as just a couple of buildings in the early 13th century but the founder had a vision and it expanded and prospered. It was just the trading post until a bridge was constructed there. The dwarves that built it got to calling the bridge "Kolbruk" (Thergerim: KolBruk), which means "Kolna’s Bridge" in Thergerim the dwarven language. The name caught on and has been called that ever since. The trading center has anywhere from 200 to 400 people, depending on the time of season.