Rich in active gases or metals — a strong mineral character.
Buoyancy
Standard buoyancy
LowHigh
Soft water — natural, classic buoyancy.
SoufreSulfuresSulfates
Nyuto Onsen Magoroku is one of the historic ryokan establishments of the Nyuto Onsen cluster, buried deep in the beech forests of the Towada-Hachimantai National Park in Akita Prefecture, Tohoku. The sulfurous water rises at 45 °C — a heat that opens the senses immediately — with a pH of 6.5, producing the milky, opaque appearance traditional in Japan's volcanic spring regions. Reached by a winding mountain road that closes under heavy snow each winter, Magoroku preserves the atmosphere of a secluded mountain retreat largely unchanged over generations: an outdoor bath fed directly by the spring, unfiltered forest air and the stillness of one of Tohoku's most remote thermal valleys.
Insider tip — Nyuto Onsen Magoroku is one of the seven traditional spring clusters deep in the beech forests of the Nyuto Onsen-kyo district in the Towada-Hachimantai National Park, reached by a forest path that floods with snowmelt each spring. Milky white, strongly sulfurous water emerges at 45°C from fumarolic vents in the volcanic terrain of the Akita highlands, creating an atmosphere of primordial wilderness bathing. Magoroku is renowned for its konyoku or mixed-gender outdoor baths, a centuries-old practice now rare in Japan. Arriving on foot via the inter-onsen forest trail rather than by car makes the arrival feel genuinely earned.
