Taking the Extreme Onsen Challenge 🏊
Ready to take on Japan’s craziest hot spring adventure? This is Numajiri Motoyu — a wild onsen deep in the hills of Mt. Adatara. No staff, no entry fee — just pure volcanic power and untouched nature waiting to be discovered.
Renowned for its water quality, this area boasts the highest natural hot spring flow by pure tonnage in all of Japan. The steaming waters mix with natural mountain streams, creating open-air hot spring rivers to soothe your muscles after the scenic hike to the top.
Bonus tips:
🩳 Bring swimwear and towels
🥾 Footwear available
🙋 Tour guide included
🆗 Tattoos welcome
Guided tours are essential due to the rugged terrain and volcanic gases, with English support available upon request.
For bookings and more information, visit the Fukushima Travel website or search ‘Extreme Onsen Fukushima’ – keep in mind the mountain is closed in winter!
Shout out @comewatchben for making the hike with me last month 🙌 a true warrior
Follow us at @rediscoverfukushima for more trip ideas 🔥
Tour starts at Cafe & Activity Nowhere, Numajiri:
📍 Numajiri-yamako-2864 Kogai, Inawashiro, Yama District, Fukushima 969-2752
🚗 25min drive from Inawashiro Station, or approx. 1hr from Fukushima Station
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