Truso, situate on Lake Druzno, was an Old Prussian (Pomesanian) town near the Baltic Sea just east of the Vistula River. It was one of the trading posts on the Amber Road, and is thought to be the antecedent of the city of Elbląg. In the words of Marija Gimbutas, "the name of the town is the earliest known historically in the Baltic Sea area". The main goods of Truso were amber, furs, and slaves.