Tsurugi-sawa-koya (剱沢小屋) is a historic, high-mountain hut in the Tateyama–Tsurugi area, widely used as a base and stage hut for parties aiming at Mt. Tsurugi-dake (剱岳) and related ridge itineraries. Its value is strategic: it sits in the core approach zone where hikers transition from plateau logistics to serious alpine terrain.

Kenzan-so is the best-known high-mountain base hut for Mt. Tsurugi-dake (剱岳)—positioned to support early summit pushes, route planning, and safe timing on one of Japan’s most serious “rock-and-exposure” mountains. It was rebuilt in 2007, and is known for unusually “comfortable” infrastructure by Japanese hut standards (e.g., modern toilets and shower facilities).