Gaya was developed based on abundant iron resources on the midstream and downstream of River Nakdong, an old site for Byeonhan. In the early period, Gaya was developed, centering on Geumgwan Gaya in Gimhae area in Gyeongnam and became the hub of international

trade as it provided iron to Nakrang and ancient Japan via sea routes. In the late 3rd century, its power grew stronger as it newly embraced the northern civilization. In the latter period, the center shifted to Dae Gaya in Goryeong Area in Gyeongbuk. As potteries

inscribed letters Daewang and flamboyant gold crowns were excavated, it can be conjectured that the state was strong enough to compete against Silla and Baekje. The characteristics of Gaya culture lie in vertical digging style stone chamber tombs, various potteries

in smooth curves, a lot of iron weapons, gold and silver inlaid techniques. In particular, artifacts excavated in Gaya tombs in Daeseong-dong (Gimhae, Gyeongnam), Dohang-ri (Haman), Okjeon (Hapcheon), Jisan-ri (Goryeong, Gyeongnam), etc., prove how magnificent

Gaya culture once was.