Mokpo is the third largest and most densely populated city in South Jeolla Province, South Korea, located at the southwestern tip of the Korean Peninsula, close to Yudal mountain. Mokpo has frequent high-speed train services to Seoul, and is the terminus for a number of ferry routes serving islands in the adjacent Yellow Sea and Dadohae National Maritime Park. To the southwest of the city is Yudalsan Mountain, which is surrounded by strange cliffs like a wall.