Minamiaso Mizu-no-Umareru-Sato Hakusui-Kōgen Station (南阿蘇水の生まれる里白水高原駅, Minamiaso Mizu-no-umareru-sato Hakusui-kōgen-eki), referred usually to as simply Hakusui-Kōgen Station, is a train station located in Minamiaso, Kumamoto, Japan. It is the longest train station name in Japan. It is also an ancient site of a well in the foothills of Japan's largest volcano, Mt. Aso.