The Nakatsu Valley is a spot where you can enjoy Niyodo Blue as much as you like, such as Uryu Falls, Autumn Leaves Falls, Ryugu deep water, and stone pillars. At the entrance of the Valley, there is Nakatsu Valley Yu no Mori, and an about 2.3 km promenade is created. The highlight of the Valley is the 20-meter-long Uryu Falls. You will be stuck with its mystic beauty.