A harvester for potatoes, beets or similar root crops is in the form of a self-propelled or pulled bunker harvester. It has an intermediate or transfer bunker receiving harvested root crop after a cleaning phase. From the receiving space of the bunker, the root crop can be discharged by means of a conveying device that forms at least partially in the bunker a floor conveyer, has a lateral transfer module and can be oriented substantially transversely to the travel direction of the harvester. The conveying device interacts with a wall-type movable support structure at least in the area of a longitudinal side of the receiving space that is facing away from the lateral transfer module.