Located in the center of the Kita-Nagato Kaigan National Park, Cheonghae Island is approximately 40 km in circumference and is also known as the “Maritime Alps.” It is truly a natural museum of great scale, with many works of art such as caves, precipitous cliffs, and stone pillars carved by nature, and many strange and bizarre rock formations. Visitors can enjoy the scenery of Cheonghae Island from the land while strolling along the Cheonghae Island Nature Study Path, and from the sea on the Cheonghae Island sightseeing boat. Qinghai Island is also a popular spot for quality scuba diving, and its popularity has spread by word of mouth and now attracts many divers from within and outside the prefecture. Visitors can see the unique topography of Qinghai Island and rare planktonic creatures.