Mt Kuki

Mt Kuki (Japanese: 九鬼山) is a Yamanashi hyakumeizan* that rises above the Katsura River valley in eastern Yamanashi as one of the most rewarding small mountains in the region. It's a steep, wooded peak with rocky shoulders, narrow ridges and wide views towards Mt Fuji (富士山). Its topography is sharper than its modest height suggest with long forested spurs rising from the valley floor, short cliff‑like sections near the crest, and a summit area with views over the surrounding ranges. Although there is no trailhead car park, Mt Kuki stands alone between the cities of Otsuki and Tsuru and offers an excellent station-to-station traverse hike.

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Kuki is known especially for its Fujisan views from the eastern slopes and from Fujimidaira just below the summit. The ridge also connects to a chain of minor peaks such as Tenguiwa (天狗岩) and Gozenyama (御前山) that form a classic local traverse, giving Mt. Kuki a central role in the low‑mountain landscape around Otsuki.

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The traverse hike starting at Kasei Station is one of the finest ways to experience the mountain and is the route that I selected. From the station, the trail climbs immediately into quiet forest, rising steadily toward Tenguiwa and the rocky knolls that mark the beginning of the ridge. The ascent involves earthy forest paths, occasional rock steps and short steep pitches that hint at the mountain’s rugged upper slopes. As the ridge continues, Fuji appears from several vantage points. The final climb to Mt Kuki is steeper, passing through grassy sections and small rocky outcrops before reaching the summit crest. From here, hikers can descend toward Saruhashi Station, completing a full ridge traverse that feels far more substantial than the mountain’s height would suggest. Parts of the traverse are narrow and deserve caution.

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* 100 famous mountains of Yamanashi

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(All information here is based on personal observations and experiences. Check official sources before planning or starting any hikes.)