The ruins Hohensyburg is definitely worth a visit. As a hiker I enjoyed the view over Hagen and the Hengsteysee. As a contrast, the casino is not far away. I've already found my luck while enjoying the great view.
From here the view is terrific! Every time I visited friends in Dortmund, they brought me here. But also the monument itself, with the 34 meter high tower and the …
The Feldhof Cave awaits you after a bend. It is very large and you should take a flashlight with you to explore so that you don't end up standing in the dark. A very interesting historical place.
The impressive boulders, ravines and faults have their origin partly in the formation of caves and their collapse and in the centuries-long iron ore mining.