Mapo Son Kalguksu is a noodle shop near Gwangheungchang Station that serves kalguksu and sujebi. The jaepat kalguksu comes in a clear, cool broth topped with a red pepper seasoning, and the bajirak kalguksu is filled with clams. A line forms at lunchtime, when office workers make up much of the crowd. The shop does not open in the evening.