Four-Wheeled Mountain Motorcycle (ATV: All Terrain Vehicle) The ATV is a four-wheeled motorized vehicle anybody 12 years of age or older can drive easily with some simple and brief training and instruction. This simplicity has made ATV driving a popular leisure activity. There are four courses offered for ATV drivers, from beginner to expert. The green course for beginners is located on flat ground and runs along Odaecheon (Odae stream). For intermediate drivers, there the blue course, which leads up to the mountaintop 1,300 meters above sea level. The black course is for those beyond the intermediate level. On this course, drivers can have the unique experience of exploring places that are normally difficult to access with the aid of safety staff. There is an advanced course available for experts and hardcore ATV clubs member.