Noda-gawa River runs through Kayadani from north to south runs into the inland sea (Aso-kai) of Amanohashidate, and is one of the three most scenic spots in Japan.
加悦谷を南北に流れる野田川が、日本三景の一つである天橋立の内海（阿蘇海）に注ぎ込む。