Gokseong

Koksŏng lies in the mountain country beside the Sŏmjin River, where its basin provides farmland among the surrounding ridges. In 1389 Japanese raiders captured the town, prompting its seat to be moved below Mount Tongak. A Confucian school was established in 1570. The county was absorbed by neighbouring Namwŏn in 1599, then restored as a separate district in 1609.