@jeder@miau.jeder.plwww.plk-sa.pl/files/public/user_upload/pdf/Mapy/2024_12_16_Id-12_linie_kolejowe_500k_LRS_DK_druk.pdf the map of current IZ borders (they are quite crazy in places, especially IZ Opole having a quite big part of the network in Lower Silesia just because they wanted every IZ to have similar amount of kilometres or something)
