Pottery urn with hatched lines round rim, from Unstan chambered cairn, Orkney, Early Neolithic, 3600 - 3000 BC

Pottery urn with groups of incised lines, from Unstan chambered cairn, Orkney, Early Neolithic, 3600 - 3000 BC

Pottery urn with triangles filled with incised lines, from Unstan chambered cairn, Orkney, Early Neolithic, 3600 - 3000 BC

Large pottery bowl with triangles of incised lines, from Unstan chambered cairn, Orkney, Early Neolithic, 3600 - 3000 BC

Large pottery bowl with a band of incised lines round the rim, from Unstan chambered cairn, Orkney, Early Neolithic, 3600 - 3000 BC

Large plain pottery bowl, from Unstan chambered cairn, Orkney, Early Neolithic, 3600 - 3000 BC

Rim of a pottery Unstan Bowl with triangles of incised lines, from Unstan chambered cairn, Orkney, Early Neolithic, 3600 - 3000 BC

Portion of the rim of a decorated pottery carinated bowl, from Unstan chambered cairn, Orkney, Early Neolithic

Portion of the rim of a decorated pottery carinated bowl, from Unstan chambered cairn, Orkney, Early Neolithic

Rim fragments of a decorated carinated bowl of orange to dark brown ware, from Unstan chambered cairn, Orkney, Early Neolithic

Rim fragments of a decorated carinated bowl, from Unstan chambered cairn, Orkney, Early Neolithic

Rim fragments of a decorated carinated bowl of coarse sandy fabric, from Unstan chambered cairn, Orkney, Early Neolithic

Rim fragments of a decorated carinated bowl of fine black sandy fabric, from Unstan chambered cairn, Orkney, Early Neolithic

Rim fragments of a decorated carinated bowl, from Unstan chambered cairn, Orkney, Early Neolithic

Carination fragments of black fabric containing soft white grits from a decorated bowl, from Unstan chambered cairn, Orkney, Early Neolithic

Carination sherd of sandy black fabric from a decorated bowl, from Unstan chambered cairn, Orkney, Early Neolithic