A Study on the Spatial Characteristics of the Mid and Lower reaches of the Miho River and the Transition Process of the Castles

This study focused on the correlation between the changes in spatial characteristics by period according to the trend of the mid and lower reaches of the Miho River in the west of the Jungwon area and the transition process of the fortress in this area. Due to its geopolitical importance, the mid and lower reaches of the Miho River has been regarded as a historically important area from the Three Kingdoms period to the Joseon Dynasty in the overall flow of korean history. This is confirmed by the distribution pattern and records of the fortresses built in this area as an administrative unit represented by Gunhyeon, Seowongyeong, and Cheongjumok. In this context, this study set the spatial characteristics identified in the mid and lower reaches of the Miho River as two characteristics: military and administrative, and focused on confirming the relationship between the change in the characteristics of the area and the transition process of the fortress in the area according to each character. As a result of the analysis, it was confirmed that the central area of Cheongju and the surrounding area of the Miho River showed significant administrative and military characteristics depending on the military or domestic political situation, and the operation pattern of the fortress also changed. When this area has an administrative character, it shows a central defense character centered on the administrative detention center, while when this area has a military character, it was possible to confirm the construction of the fortress around the point where you can see the traffic route entering the area.