Trudna (formerly Kappe, the German name) is a village in the Krajna region. Before World War II, two watermills operated on the Debrzynka River near Trudna. During the fighting for the Pomeranian Wall in early 1945, retreating Germans blew up the bridge over the Debrzynka, a groat mill, and a miller's farm on the Trudna-Rozwory road. Today, the ruins of the mill, groat mill, and farm stand.