Fragments of red earthenware and stoneware neck from cesspool in Groenendaal, storage jar pot holder soil find ceramic earthenware glaze lead glaze, hand turned decorated glazed baked Fragments pottery and stoneware from cesspit Fragments of large storage pot with comb decoration over the shoulder bottom fragment with standlob of plate edge fragment of baking pan. Wall fragment with half ear of unglazed earthenware neck fragment of stoneware jug. brown and gray salt glaze archeology Rotterdam City center Stadsdriehoek Groenendaal underground pit earthenware stoneware underground pit Groenendaal 11 September 1975 from cesspool Rotterdam.