Mostly slab walls of limestone.
This webpage is in German, but provides topos images for the various sections, routes and grades (5 to 7+). www.kletterarena.info/klettergebiet_werdohl.php]]www.kletter>>>
This is a really nice place to climb with children and new climbers. There are several unintimidating, well bolted, easier routes that are nice for a new leader to get comfortable on. The approach is very short (2 minutes with a 4 year old) and the base is flat. There is a picnic table and a couple benches. This is not a big area (under 30 routes), but it is a nice place to spend the day.
Driving directions https://maps.google.com/maps?saddr=&daddr=51.261806,7.757173