Suncheon Geomdansanseong Fortress

This is a Baekje-era mountain fortress located on Geomdansan in Haeryong-myeon, Suncheon-si. Until recently, Geomdansan Fortress was known as a Joseon-era mountain fortress built while the allied forces of Joseon and Ming faced the Japanese troops of Suncheon Waeseong during the Jeongyu War. However, as a result of a precise surface survey in 1996 and excavation surveys conducted twice in 1998 and 1999, it was determined to be a fortress built during the Baekje period. Geomdansan, where Geomdansan Fortress is located, is a low mountain with an elevation of 138.4 m, situated at the passage connecting the Yeosu Peninsula and the Suncheon area, and is a fortress site with Gwangyang Bay visible right in front. It is 2.5 km in a straight line from Suncheon Waeseong to the east. The fortress walls measure about 430 m in total length, 1–3 m in outer wall height, more than 2 m in inner wall height, and about 5 m in wall thickness. The fortress form is a typical temoe-style mountain fortress. As facilities inside the fortress walls, the remains of 3 gate sites, 3 building sites, 1 large well site, and 2 storage pits, along with various artifacts such as roof tiles, pottery and earthenware, wooden objects, and stone tools, are valuable materials for understanding the fortress and life at the time. The construction period of this fortress is estimated to be from the late 6th century to the first half of the 7th century, based on the construction techniques and the excavated roof tile fragments and pottery shards.

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