Magpie Forest (Polish: Sójczy Las) is an old forest in Temeria, between Dorian and Ivalo. There are many scary stories about something evil living in this place and the reason why the forest hadn't been cut down as of yet in 1373.
In fact, it was the home of IDR UL Ex IX 0008 BETA, which was killing travelers that dared travel alone through the forest. It was later eliminated by a man described as a white haired witcher in 1373, thanks in part to a young Nimue, who unwittingly started to walk through the area by herself.