In reply to jimtitt:
> there are topos on the notice board at the car park below the main cliff (Dohlenfels). Grading a bit old-school!
Just as well for me at the moment, since the guidebook is out of print & I lost mine. Left it in a hire car while my car was in the garage, didn't realise until too much later.
I would add that the climbing style at Konstein (and Prunn by reputation, I've never been there) tends to be a lot more slabby & technical than the steep pocket pulling the the "main" Frankenjura a bit further north is known for. Otoh Konstein a compact area, easier for the casual visitor on a short visit to navigate without a guidebook. And the Dohlenfels is one of the more "normal" sectors in terms of limestone climbing style, i.e. steep with holds.