Insubong: Granite Multipitch Above Seoul, from Insu A to Chouinard B | Korea Climbing Crags
Insubong offers granite cracks, friction slabs and chimneys in Bukhansan National Park. Insu A and Chouinard B are graded YDS 5.8, but still require trad, multipitch and descent skills. Take the Ui–Sinseol Line to Bukhansan Ui Station, then a taxi to the Baegundae trailhead to save the uphill road walk.