Here's some places you might start; I translate as "wall" but it may be a gym. . .
Hyundai Art Hall Artificial Climbing Wall
052-235-2100
Hanbaek Alpine Club Climbing Wall
052-295-0909
in Ok-dong, by Gunbu University
I think there's another place, too. I am pretty sure one or more advertises in
magazine Climber. . . if you still can't find something when I'm back in Korea I can do a further search or you (could have someone) contact the Ulsan Alpine Federation
http://www.uaf.or.kr/
e-mail :
[email protected] / phone. 052-296-8848 / fax. 052-296-8516