Wooden bottom of small tub or basket, oval in shape, component ground find timber, sawn planed stabbed Oval wooden bottom of basket or tub Along the edges remnants of iron nails Curled by dehydration archeology Rotterdam City triangle Groenendaal underground pit package store market cellar archaeological find in the soil Rotterdam underground pit Groenendaal from the 15th to the 16th century layer 1975-09-26.