Development pattern and regional historical significance of Silla ancient tombs in Gokgyocheon basin

Most of the Silla tombs in the Gokgyo Stream basin are small stone tombs. Based on the chronology of the excavated pottery, the development process of the tombs can be explained by dividing it into four stages, and the Silla transformation process in the Gokgyocheon basin can be specified according to the distribution and evolution of the tombs. The first stage is from the late 6th century to the early 7th century. Contrary to the existing perception, Silla advanced into the Gokgyocheon basin around the end of the 6th century and came into contact with Baekje, which occupied the west coast. The second stage corresponds to the mid-7th century. After the first stage, the construction of Silla tombs was suspended for a period of time and then resumed. In the first quarter of the 7th century, Baekje crossed Gokgyo Stream and advanced to the vicinity of Jiksan in northern Cheonan to confront Silla. Afterwards, Silla re-entered the Gokgyocheon basin in the mid-7th century and expanded its area starting from Phase I. When they reached the central Asan region, they crossed the Charyeong Mountains and faced Baekje. The third stage corresponds to the late 7th to early 8th centuries. After the annexation of Baekje, counties and prefectures were established in the Gokgyocheon basin, and tombs were spread throughout the Gokgyocheon basin. Stage Ⅳ is a stage in which the construction of tombs rapidly decreases and can be seen as the period from the late 8th century to the early 10th century. Earthen mounds were built along with stone mounds, and from the 9th century, the end of this stage, standardization collapsed, and along with this, Tang-style tombs began to be built during the recession period, which lost regularity. get around.