Thought this place needed a full page of its own instead of an additional line under another gym. Cost is 3,000 Won for 4 hours of climbing; pay at the information desk on the same floor as the wall. The wall is in the main building nearest the main road. There's a parking garage underneath the gym (free). Hours are Tu-F: 0900-1800; Sa 0900-1200; Sundays/Holidays 1000-1600. Closed 1st and 3rd Sundays. The wall is about 15m tall. You can rent shoes for 20,000 Won according to the web page. Otherwise, bring your own shoes, harness, rope and belay device.
From Osan AB, take Hwy 1 (Little 1) north from Songtan to Osan. Once in Osan, turn right on to Gyeonggidong-ro. Go 250m and the sports complex will be on your left. Park in the parking garage underneath the building (free).