|The Yeonsandong Tombs is the only ancient tombs with gigantic mounds in Busan as the graveyard moved to this area because of lack of graveyard of leaders of the Bokcheondong Tombs when the ancient tomb with a gigantic mound appeared in Gaya area influenced by the great tomb of Hwangnan.
It is very unique in producting mound and it inherits and develops the burial facility of the Bokcheondong tombs, so it is thought as the tombs that inherits the chief authority of the Bokcheondong tombs. The buried leaders have its roots in armed power like the Bokcheon tombs or the Okjeon tombs.
It is considered that Busan was already subjugated to Silla in the middle of 4th century, however, this viewpoint should be wrong. According to the archaeological evidence, Busan constituted the core of the former Gaya with Gimhae in the 4th century. After a conquest of Gogurye in 400 A.D, as supremacy of Yeongnam area moved to Silla(Gyeongju), Busan lost its strength. However, as the local independent group, the ancient tombs with gigantic mounds were still pructucted in Busan. If the ancient tombs with gigantic mounds were still built, it must be thought to maintain its independent authority.
According to the distribution sphere of the symbol burials of chief class such as an armor and an harness, they exchanged with Silla and closely related to small countries of Gaya. They shared strong identity and homogeneity as a member of “Gaya”.