Akadake Chōjō-sansō (赤岳頂上山荘)

Akadake Chōjō-sansō is the iconic summit-area mountain hut on Mt. Akadake (2,899 m), the highest peak in the Yatsugatake range. It sits just off the true summit on the ridgeline, making it a pure summit-timing base: sleep high, hit sunrise, and move early for ridge traverses in stable weather windows.