An agricultural round baler , in particular for baling stalk-like harvested material into round bales , comprising: - an interior space surrounded by a housing , - a feeding device , by means of which harvested material can be fed to the interior space through a transfer cross section , - a plurality of guide rollers which extend within the interior space in a transverse direction of the round baler , - a baler belt which is configured in the form of an endless belt and is positioned around the guide rollers in a manner such that it can run around a run path within the interior space , as well as - an adjustment device which comprises at least one adjustment roller extending parallel to the guide rollers , wherein at least one of the guide rollers is configured in the form of a drive roller by means of which the baler belt is driven, wherein along its run path, the baler belt sets up a bale chamber which interacts with the transfer cross section so that harvested material guided into the interior space by means of the feeding device enters the bale chamber , wherein the adjustment roller is positioned along the run path of the baler belt in a manner such that at least one section of run path directly adjacent to the adjustment roller at least partly delimits the bale chamber , wherein the adjustment roller of the adjustment device is movably configured in a manner such that at least a portion of the run path of the baler belt is displaceable, characterized by at least one second adjustment device , the adjustment roller of which, which is operatively connected to the adjustment roller of the first adjustment device , sets up at least a portion of the bale chamber , wherein the adjustment roller of the second adjustment device is movably configured in a manner such that at least a portion of the run path of the baler belt is displaceable within the interior space , wherein at least one of the adjustment devices , preferably both adjustment devices , has a respective roller pair which comprises two associated adjustment rollers , wherein preferably, both adjustment rollers are configured so as to be movable, wherein at least one of the adjustment devices , preferably both adjustment devices , comprises at least one linear drive which is configured so as to displace the adjustment rollers within the interior space along a straight line, wherein the straight line preferably extends between the adjustment rollers and a fixed deflecting roller associated therewith. - an interior space surrounded by a housing , - a feeding device , by means of which harvested material can be fed to the interior space through a transfer cross section , - a plurality of guide rollers which extend within the interior space in a transverse direction of the round baler , - a baler belt which is configured in the form of an endless belt and is positioned around the guide rollers in a manner such that it can run around a run path within the interior space , as well as - an adjustment device which comprises at least one adjustment roller extending parallel to the guide rollers , wherein at least one of the guide rollers is configured in the form of a drive roller by means of which the baler belt is driven, <EOS>