The application heritage consists of seven typical tombs that illustrate the history and cultural characteristics of Gaya through literature and archaeological evidence. The heritage zone of these components contains all the elements that represent excellent value and sets a range enough to show its characteristics and structure. Heritage sites and buffer zones are all well preserved by law and system..
The application heritage consisted of seven tombstones showing the progress of social development gradually. The Gaya Tumulus group is composed of two parts: (1) a central tomb group at the base of the maritime trade in the second half of the third century, showing the emergence of political bodies; (2) a central tomb group was established by the first half of the 5th century; (3) the stage of growth of the tombs in Gaya area in the late 5th century and the growth of the tombstones due to the large size of tombs; (4) It includes all the stages of transformation that are symbolic of the interchange.
The application heritage is established on the domestic and overseas trade routes and shows the internationality and openness of Gaya. The Gimhae Daesung-dong tomb located on the coastal coastal port and the Songseong-dong tomb of Goseong show various artifacts and burial structures symbolizing exchanges with China and Japan. The Haman Ansan tomb located on the inland waterway shows that the developed artifact production technique and the advanced Jisan-dong tomb group transferred the developed artifacts such as metalwork and decorative harness to Japan. The Hapcheon Tomb group shows various cultures crossed as a warehouse. Located at the boundary between Silla, Baekje and Gaya, the Changdeok, Songhyun-dong tombs, Namwon-Yugokri and Burakgou tombs were located at major strategic points for defending the entire area of Gaya, and physical evidence showing the relationship between Gaya, Silla and Baekje was excavated from the tomb. The relics and burial structures in the burial mound show internationality, including foreign trade in the Gaya area. In addition, the presence of exotic tombs built in the basin tombs is an important element of the openness of Gaya.
The application heritage shows the status order of the Goa society through the scale and arrangement relation of the individual tombs, and shows the hierarchy of the Gaota political system through the scale of each central tomb. The heritage sites of individual tombs contain a range sufficient to reveal the placement relationship that reflects the size and hierarchy of the tomb. The buffer zone of the heritage was set up to include the extent to which the landscape of the Gaya Tumulus cluster could be protected visually.
Both the application heritage and buffer zone are designated as national historic sites on the basis of the Cultural Properties Protection Act and are systematically managed, such as conducting regular surveys every five years. Relevant local governments are able to protect their relics by carrying out surveys on relics and changing the designation if necessary according to the results of research.