In reply to madmats: The nearest areas that I know of will be either the Okertal (near Goslar), the Ith (near Einbeck) or the Harz - all about 90 mins plus-ish to the ESE of Osnabruck. They're all good areas, with a mixture of limestone, grit-like sandstone and granite, some bolted, some trad.Best guidebooks would be Klettern im Norden (for the Ith area)or Wo die Felsnasen schnarchen (for the Okertal). Hope this helps, cheers, JW