https://upload.wikimedia.org/wikipedia/commons/thumb/9/92/Pottery_shred%2C_from_stump_base_of_a_jug._1st_Dynasty._From_the_Royal_Tomb_of_Semerkhet_at_Umm_el-Qa%27ab%2C_Abydos%2C_Egypt._The_Petrie_Museum_of_Egyptian_Archaeology%2C_London.jpg/330px-Pottery_shred%2C_from_stump_base_of_a_jug._1st_Dynasty._From_the_Royal_Tomb_of_Semerkhet_at_Umm_el-Qa%27ab%2C_Abydos%2C_Egypt._The_Petrie_Museum_of_Egyptian_Archaeology%2C_London.jpg