>>866522German here.
You don't see any turks (greatest minority) going /out/ like a lot of germs do, like hiking, climbing or mountainbiking.
You sometimes see them in the citypark in groups making a small fire (and get fined for it, saw it several times).
I'm not sure why that is. but i'm not complaining.
What you often see is russian immigrants camping at larger streams but still inna city, trying to catch fish. Without a license often, so they get fined.