Possible NSFW images. next-thing.net - next thing Resources and Information.
Any Dopers out in Korea seen it? According to the Jeju Loveland website, there is a recreation and play area available for visitors under 18; so feel free to bring the kids.
:: makes note to visit Jeju soon ::
Ya know you have to wear all latex to get in the park, right? 
Make sure to take lots of photos!
Meet you there around Novemberish? You know… since skiing is out.
I spent a week on Jeju-Do back in 2000 (or so…); never saw that park at all! I woulda had a good time there.