Harz Mountains
The Harz Mountains are steeped in legends and tales of witchcraft. Interesting to note is that they are roughly the same size and character as the Catskill Mountains and Highlands of Scotland. All of these mountain ranges share alpine terrain and are the place of fairy tales.
https://www.science.org/content/article/germany-s-trees-are-dying-fierce-debate-has-broken-out-over-how-respond
https://blogs.transparent.com/german/witches-in-germanys-harz-mountains/