Seopjikoji is located at the end of the eastern shore of Jeju Island. “Seopji” is the old name for the area, and “Koji” is Jeju dialect meaning a sudden bump on land. On Koji hill which is wide and flat, there stands a stone Bongsudae called “Hyeopjayeondae” with a 4m height and 9m length and width that has retained its original form.