3000 BC)
Further information: MesolithicAbout 8000 BC, the climate started to change, and the former subarctic tundra was transformed into woodlands.
About 7,500 years ago, the Litorina Sea, a predecessor of the Baltic Sea evolved, with its southern coastline being close to the current one.
Read more about this topic: Early History Of Pomerania, Mesolithic (Middle Stone) Age (8000