Matsukawa Keikoku Onsen

Matsukawa Keikoku Onsen is located in Nagano Prefecture within a river gorge landscape — keikoku meaning gorge or ravine — where sulfate-rich thermal waters emerge from the volcanic geology of the Japanese Alps amid the dramatic scenery of deeply cut river valleys, forested canyon walls, and the kind of intimate, enclosed natural setting that Japan's gorge onsen are celebrated for creating. The sulfate mineral composition of the spring produces waters associated with muscle relaxation and anti-inflammatory benefits, a therapeutic character particularly valued by hikers and outdoor enthusiasts who have navigated the demanding terrain of the gorge landscape surrounding the spring. Matsukawa Keikoku Onsen's combination of therapeutic sulfate mineral water and a dramatically scenic gorge setting within Nagano's celebrated alpine landscape makes it a memorable destination that rewards visitors with both the visual pleasure of the canyon environment and the physical benefit of volcanic mineral thermal bathing.