Mt Iwate

Mt Iwate (Japanese: 岩手山) is one of northern Japan’s great volcanic hyakumeizan* mountains. It's an active stratovolcano whose height, history, and dramatic topography have made it the defining peak of Iwate Prefecture. It stands just northwest of Morioka and dominates the skyline so completely that it has long been known as Nanbu Fuji, the Fuji of the old Nanbu domain.

 

Its topography reflects its complex volcanic past. Mt. Iwate consists of two major volcanic edifices: the western Nishi‑Iwate, which contains a large caldera, and the eastern Higashi‑Iwate, a more symmetrical cone built from repeated lava flows. Seen from the east, the mountain appears almost perfectly conical; from the west, the caldera’s collapse scars give it a broken, rugged profile. The summit area is a harsh volcanic landscape with dark rock, ash fields and a wide crater rim that will excite volcano lovers like me. Mt Iwate remains an active volcano and is closed from time to time when it becomes more active. The most recent eruption occurred in 1919 at Ōjigokudani. Fumaroles and geothermal vents can still be seen.

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For me, hiking Mt Iwate was one of  my favourite experiences in northern Honshu. Multiple routes climb the mountain, but like most hikers I climbed from the Umagaeshi trailhead. It was late May, but there was still considerable snow around and the hike took around 7-8 hours. The trail passed through beech forest, volcanic scree and exposed ridges before reaching the crater rim, where a loop trail allows hikers to walk around the summit’s dramatic volcanic basin. On clear days, the views stretch across the region towards Hachimantai (八幡平) and even Mt Chōkai (鳥海山).

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* 100 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.)