Pomerania's historical border in the west is the Mecklenburg-Western Pomeranian border Urstromtal, which now constitutes the border between the Mecklenburgian and Pomeranian part of Mecklenburg-Western Pomerania, while it is bounded by the Vistula River in the east. The easternmost part of Pomerania is alternatively known as Pomerelia, consisting of four sub-regions: Kashubia inhabited by ethnic Kashubians, Kociewie, Tuchola Forest and Chełmno Land.
Pomerania's historical border in the west is the Mecklenburg-Western Pomeranian border Urstromtal, which now constitutes the border between the Mecklenburgian and Pomeranian part of Mecklenburg-Western Pomerania, while it is bounded by the Vistula River in the east The easternmost part of Pomerania is alternatively known as Pomerelia, consisting of four sub-regions: Kashubia inhabited by ethnic Kashubians, Kociewie, Tuchola Forest and Chełmno Land.