Mt Nantai

Mt Nantai (Japanese: 男体山) is a hyakumeizan* that rises steeply above Lake Chūzenji in Tochigi, a near‑perfect volcanic cone that dominates the skyline of the Nikkō region. It's one of the most striking mountains in northern Kanto formed by ancient eruptions of the Nantai volcano, whose lava flows shaped the surrounding highlands and created the lake at its base. The mountain's presence is not only geological but spiritual. Mt Nantai is a sacred mountain of Futarasan shrine, located far below the summit be the lakeside.

​

Topographically, Nantai is a classic stratovolcano and is therefore steep and unrelenting. The lower slopes are wrapped in dense forest, but the upper mountain is rocky, exposed and rugged, with loose volcanic stones and sharp ridges that rise straight toward the summit. Because of its height and prominence, the views from the upper slopes are excellent. You can see Lake Chūzenji, the Nikko mountains forming a great ring of peaks and the Kanto plain stretching far to the south.

​

The standard hiking course from the lakeside begins at Futarasan Shrine, where I passed through the torii gate before starting the climb. The trail starts gently, winding through quiet forest before steepening dramatically. The middle section is a long, sustained climb over roots, rocks, and volcanic gravel, with occasional openings that reveal the lake far below. As the trail rises above the treeline, hikers climb over exposed ridges and loose stones before making a final push towards the summit. The top of Mt Nantai is a spiritual area with a shrine and other religious elements, although I was most impressed by the views of the lake below.

​

* 100 famous mountains of Japan

​

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