Gat in de Markt is the name of an excavation in the old center of Vlaardingen, situated on the edge of the market around the Grote Kerk. Part of an 11th century cemetery was found here. The 4 facial reconstructions of this project are based on 4 of the 45 skeletons excavated here. Through DNA research a distant descendant of 1 of these 4 individuals was found.