Sanpuku-tōge-goya (三伏峠小屋)

Sanpuku-tōge-goya is a classic ridge-pass mountain hut sitting on Sanpuku-tōge, widely described as Japan’s highest mountain pass at 2,580 m. It’s the key staging base for Mt. Shiomi-dake and Mt. Okochi-dake itineraries, and a crucial “timing node” for long Southern Alps ridge days where weather and fatigue margins matter.