Within Daereungwon Tomb Complex is Cheonmachong Tomb (Ancient Tomb No. 155), which was excavated in 1973. Cheonmachong Tomb consists of a wooden coffin placed inside an underground chamber mounded with boulders and earth, characterized as a typical upper class tomb of the Silla period. The mound has a height of 12.7 m with a diameter of 50 m, and consists of a layer of rocks collected from streams. Below the rock layer is a wooden chamber with a length of 6.5 m and a width of 2.1, reaching 2.1 m in height, with the wooden coffin at its center. A total of 11,526 artifacts were discovered within the tomb, including Cheonmado, an artwork considered to be highly valuable as it is Korea’s first artwork to be excavated from an ancient tomb.