The Lowlands are the most fertile part of the Rim and contain the majority of its agriculture. The farms and fields of the Lowlands are primarily worked by the Wildlings, who make up the greater part of the area’s population. In the north, the Lowlands are bordered by Castle Brune, which serves as a barrier between the Lowlands and the Imperial-dominated lands beyond. In the south, the Lowlands give way to the forests and mountains of the Southern Reaches. The Imperial Road, which spans from Highreach to Corpsehome, runs through the entirety of the Lowlands.