Blackstone Jeju is a membership golf course on Jeju, surrounded by gotjawal forest and oreum cones. Its features include ryegrass fairways and greens, a layout with wide spacing between holes, and views of the sea in the distance. The clubhouse has locker rooms, dining facilities, and a sauna, and the flow from reservation to check-in to tee-off runs smoothly. Tall-lipped bunkers around the greens, subtle slopes, and the Jeju wind make the course difficult to play.