咸鏡南道
A characteristic of Korean mythology is that the corpus is poorest in and near the capital of Seoul—the traditional political, economic, and cultural center of the country—and largest and most diverse in South Hamgyong Province and Jeju Island, the northernmost and southernmost peripheries respectively. The two peripheral mythologies are the most archaic. Several similar myths are found in both Hamgyong and Jeju despite the great distances involved, suggesting that the two mythologies both descend from a common ancient Korean source.