This cache is placed on the west side of Moseulbong, on Olle trail 11. Once you have found the cache, and if it is a clear day, turn around and enjoy the view over this part Jeju's south-west corner to the coast.
If you are looking for this cache while walking Olle 11, it is a few kilometers from the start and you will have followed the farm track up the side of the hill. It is possible to drive to the location.