Mt Okudainichi &
Mt Dainichi

Mt Okudainichi (Japanese: 奥大日岳), a nihyakumeizan*, and Mt Dainichi (大日岳) sit on the far northern edge of the North Alps, where the mountains begin to lean toward the Sea of Japan. They are rugged, atmospheric peaks that are quiet compared to the busy Tateyama (立山) area, yet close enough that you can reach them as side trips from Murodo. From their ridges you look north to the sea, south to the Tateyama massif, and across to the jagged sword of Mt Tsurugi (剱岳), which dominates the skyline during the approach to Okudainichi.

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The topography here is steep slopes, broken ridgelines and long stretches of exposed rock shaped by centuries of snow and wind. The ridge between Okudainichi and Dainichi is especially dramatic, with ladders bolted into cliffs, narrow traverses, and sections where chains guide you across tilted slabs. Flora and fauna thrive in this high environment. Alpine flowers brighten the meadows in summer, and raichō rock ptarmigans appeared frequently to me on the traverse. 

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From Murodo, Okudainichi makes an excellent half‑day return trip with excellent views of Tateyama and the volcanic Jigoku Dani volcanic area of Murodo. The trail rises steadily, offering increasingly wide views of Tsurugi’. Dainichi, farther along the ridge, requires a full day to reach and return, and the journey feels more remote and adventurous. The reward is a summit panorama that captures both the northern coastline and the full sweep of the Tateyama range.

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* 200 famous mountains of Japan

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