Akadake Kōsen is one of the most important “base-camp” huts in Southern Yatsugatake. It’s famous for being open year-round, for its winter artificial icefall (Ice Candy) scene, and for offering an unusually comfortable stay for a mountain hut (good meals, modern facilities, and a bath in the green season). It also runs a large, organized tent site, making it a natural hub for staged climbs toward Mt. Akadake and Mt. Iō (Iodake).

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.

Akadake Tenbō-sō is a classic ridgeline mountain hut on the Akadake–Yokodake ridge in Southern Yatsugatake. It’s used as a high staging base for summit pushes and ridge traverses, with the main selling point being exactly what the name promises: big, open views straight into the Akadake massif.

Gyoja-goya is one of the most important huts in the Southern Yatsugatake network. It sits in a natural “amphitheater” beneath the main ridges, making it a perfect staging base for summit pushes to Mt. Akadake (2,899 m), Mt. Yokodake, and Mt. Amidadake—either as a hut stay or (more commonly) as a tent-base hub for 1–2 night itineraries.