This hill is one of the highest in this area, 835m. Very nice
trekking trail for the whole family, there are many places of
interest to visit. At the top there is a small chapel and a hut
where you can have some warm dish and drink. Wonderful panorama
also!
The cache is hidden at 800m height above sea-level near a nice
outlook place.
Be careful where you step, lots of holes are hidden between the
rocks.
The box is hidden in a hole under a bigger stone. The spoiler
photo and a compass could be helpful. 
Here you can park: 50°33.135’N 9°53.799’E
If you would like to take a longer nice tour in the woods (3-4
km) park here: 50°32.769’N 9°52.840’E where you can find a barbecue
place (public and free – which is quite rare in Germany!) beside a
small creek - with many tables, suitable for many families.