The B498 through the Oker-Tal is a beautiful & twisty piece
of bikers heaven.
In Harz in general you will find all sorts of twists and
turns from the tighest sharpest-possible hairpins to very
fast open sweepers.
When you go there you will find out that hundreds -
if not thousands... - of bikers have discovered the same thing.
Ride safely - but have fun...! :o)