The Bronze Age Culture of Jeju formed and developed as a result of continued interaction with the mid-southern region of the Korean Peninsula. Large-scale Bronze Age village sites in Samyang-dong and Yongdam-dong indicate large groups of people lived together. The houses were located in flat hills or by the coast. During the Bronze Age, Jeju residents made pattern-less pottery and accessories with shells. They mainly used ground stones and the privileged class also possessed bronze ware.