Climbing Insu B on Insubong(Insu Peak) - Bukhansan, South Korea

Insu B is a classic route in Bukhansan National Park, Seoul. The first pitch with cracks is a fun 5.7, but maybe sandbagged like everything on Insubong. The second pitch in this video is mostly slab with very thin holds and run-out, graded 5.9, but it's another route, and we ended the day there.