Japan’s Coldest Hot Spring | The Onsen That Defies Nature

Join The Onsen Guy deep in the mountains of Nagano as he visits a hot spring that shouldn’t exist — an onsen so pure, so powerful… yet so cold it defies nature itself. ❄️ For centuries, this hidden onsen has flowed straight from the earth, its mineral-rich waters strong enough to corrode metal and even eat through light sockets. Locals call it medicinal — a living, breathing spring that shocks the body and stills the soul. A cherished gift from the earth used for therapy and wound-healing since antiquity. Join The Onsen Guy as we visit one of Japan’s most mysterious and rare hot springs — located in Shibutatsu Ryokan in Nagano prefecture. Here, the water runs cold, the air is silent, and every soak feels like a step back in time. Tune in and you’ll even learn the traditional bathing technique used for centuries in these healing-waters — “Onrei Kogoyoku” cold & hot spring contrast bathing♨️ Let’s go for a chilly plunge together! 🥶 📍 Shibutatsu Ryokan 奥蓼科温泉 渋・辰野館 https://maps.app.goo.gl/M4HMKEWuxvYgZ... —— A very special thanks to Fjällräven Japan for providing some of the wardrobe for this trip🦊 https://fjallraven.jp —— Kyle Card is a certified Onsen Sommelier & Hot Spring Bathing Consultant (温泉入浴指導員) with 15+ years of firsthand experience in Japan. He specializes in Japanese onsen etiquette, proper bathing practices, and cultural know-how, so you can enjoy hot springs with confidence and respect. 🔔 Subscribe to The Onsen Guy for clear, expert onsen guidance. 📲 Follow me on Instagram for exclusive onsen content! Instagram: @theonsenguy https://www.instagram.com/theonsenguy... #keepsoaking Chapters: 00:00 Introduction 00:33 Getting in Shiubutatsunokan ryokan 01:39Small Shrine inside of the ryokan 02:13 Onsen Time 02:36 Utaseyu (Waterfall bath) 03:50 Taking Onsen and Utaseyu 05:23 Yunohana 06:11 explaining What is Onsen? 07:05 Rotenburo (Outside bath) 07:15 Lunch time 07:22 Outro