Black Pottery Pot with Double Rings

The black pottery was fired in a strongly reducing atmosphere (lacking oxygen); during the last stage of firing the fire was extinguished, the kiln was closed, and water was poured from the top chimney; carbon element from the fuel infiltrated the ceramic wall through the steam. Longshan is a Late Neolithic culture. It was named after Longshan village, Zhangqiu county, Shandong province where it was first recognized in 1928. The vessel was made on a rotating wheel which became common during the Longshan culture, and vessels became thinner than before.