Comb Ceramic or Pit-Comb Ware (in Europe), Jeulmun pottery or Jeulmun vessel (in Korea) is a type of pottery subjected to geometric patterns from the comb-like tool. This type of pottery developed in the northern woodlands of Eurasia, and widely distributed in the Baltic, Finland, the Volga upstream flow, south Siberia, Lake Baikal, Mongolian Plateau, Liaodong Peninsula and the Korean Peninsula. The oldest ones have been discovered from the remains of Liao civilization - xinglongwa culture (BC 6200 - 5400 BC) -.