Unglazed pottery test on three standfins, with short handle, square, test fire test soil find ceramic pottery, hand turned hand shaped baked Pottery test on three stand fins Short handle between two corners attached. Round bottom and side wall merging into square top edge. Glaze tuft along the upper edge Roetsporen on the inside archeology underground pit Rotterdam City center Stadsdriehoek Groenendaal indigenous pottery heat food preparation food cooking kitchen room Soil discovery underground pit Groenendaal found 1976-09-23.