Gosugul is located further to the southwest in the Gangwon province and is another commercial cave. To get here, it is recommended that you have a car, as the bus/train situation is sparse. We visited this on a weekend we were looking at other caves on the river, and found that there is also a large cave museum located here, which apparently, had been developed by the professor we were caving with every month!
The crew on the huge walkway to the cave entrance.
You can visit the Korean Tourist website for this cave here:
http://english.visitkorea.or.kr/enu/ATR/SI_EN_3_1_1_1.jsp?cid=264275