"Shonai Obako no Sato Komagi Natural Hot Spring Komagi no Yu" is a comprehensive bathing facility in Tsuruoka, Yamagata Prefecture. Its large sauna, among the biggest in the prefecture, can accommodate more than 30 people at once, letting guests work up a pleasant sweat in a relaxed space. The sodium-calcium sulfate spring, which rises from 1,500 m underground, is colorless and clear with a smooth feel on the skin. With a three-tier stone open-air bath and the rare "Beitou Stone Bath," among other features, guests can enjoy excellent natural hot spring water in a variety of baths. The cold plunge bath after sauna is deep enough to immerse your shoulders, and cooling down in the open-air resting area with its refreshing outdoor atmosphere is exceptional. It also has a farm-fresh market and restaurant, so you can enjoy the charms of Shonai all day long.