The library of the Geological Institute has almost 7,000 geological maps, only a small part of which are listed in the Catalogue Plus of the UB. Please write to us or come by if you want to know if we have a map for the area you are looking for.
- Online access to public domain maps of this region can be found here
- Via the Geoportal NRW (only available in German)
- About the Geological Survey of Wallonia, Belgium including the border region you can find here