I went to Amsadong. There are pit houses and comb pattern pottery. Pit house is Neolithic people's house. Comb pattern pottery is used to cooking or storage. Their under shape is sharp, so they can put them into the sand. And i saw Grinding stone and pestle. They are used to grind or pound acorns. And Neolithic people lived near the riverside or sea shore. They farmed and fished. After people ate shellfish, they threw away the shells. The shells made mounds which helped us learn about the life of the neolithic people. Thank your for listening.