Yongseo Pokpo is the best climbing area on the planet. There's a bit of learning curve because the rock is basalt, so it climbs differently from other rock. I'm not sure if I'll make it out this weekend, but I'll try.
If you go please check out my rebolting initiative
here. If you see a bolt that's not safe, write down the name of the route and where on the route. Send me a PM and let me know. Thanks!