On 19 June 2014, the pilot site Ketzin held for the fourth time its Open House Day. Interested visitors from Ketzin, Potsdam and the surrounding area took this opportunity to talk to the employees of the GFZ about the research and the results for CO2 storage at the pilot site. Young guests did experiments at numerous stations, were creative and did sports. The fire department of the city of Ketzin participated actively in the event and won the - now traditional - tug of war against the GFZ.