The Central Geological Database (CBDG) is Poland's largest collection of digital data relating to the Earth sciences. This database is maintained and developed by the Polish Geological Institute – National Research Institute. CBDG task is to collect and share different types of information in the field of geology and related sciences.
All geological data in the application GeoLOG comes from spatial data server CBDG. They are also available as a WMS and WFS services on the Portal CBDG (http://geoportal.pgi.gov.pl).