Two fragments of chamber pot, room ease, vaulted bottom, pot holder sanitary earthenware ceramic earthenware glaze, hand-turned glazed baked Two fragments of earthenware chamber pot with vaulted bottom Sparely glazed lead glaze internally only on the bottom under the neck opening. Thick upright sausage ear Wide neck opening. Red earthenware archeology Rotterdam City triangle Groenendaal underground pit indigenous earthenware drains night sleeping room hygiene Soil discovery Rotterdam underground pit Groenendaal from waste pit at 137 meters and 12 to 2 meter N..P.