The Bełsko Plain (851.21) is a physiographic mesoregion located in southeastern Poland and Ukraine, situated between the Roztocze Upland and the Sokal Ridge. It is the only part of the Pobuże Basin that lies within Poland, located at the confluence of the Sołokija and Rzeczyca rivers. The region is characterized by a rolling denudational surface formed on Upper Cretaceous marls, transitioning southward into the accumulative plains of the floodplain terraces. The main town in this area is Bełz in Ukraine, while on the Polish side, notable towns include Jarczów, Ulhówek, and Korczmin. In Poland, the Bełsko Plain covers the northern parts of the municipalities of Jarczów and Ulhówek, the northeastern part of the Lubycza Królewska municipality, as well as parts of the Tomaszów Lubelski and Dołhobyczów municipalities. As an agricultural region, the Bełsko Plain holds significant importance for the local economy, and its charming landscapes and stunning views in towns such as Machnów Nowy, Dyniska, and Myców attract tourists. This region is not only geographically significant but also culturally rich, with a deep history that connects Poland and Ukraine.