Mt Tarumae

Mt Tarumae (Japanese: 樽前山) rises above the shores of Lake Shikotsu in southwestern Hokkaido, a stark and powerful reminder that this region is still very much alive beneath the surface. It is not a tall mountain, yet its presence is unmistakable with a raw volcanic dome surrounded by a broad, ash‑covered plateau and  an active crater that continues to emit steam. The topography is dramatic, an exposed, treeless world of pumice, lava blocks and wind‑scoured ridges.

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Its significance comes from its geology. Tarumae is one of Japan’s most active volcanoes, part of the Shikotsu caldera, whose ancient eruption created the deep blue lake below. The mountain’s current dome formed in the 20th century, and the crater and dome remain off‑limits due to ongoing activity. This combination of accessibility and volcanic immediacy makes Tarumae one of Hokkaido’s most compelling peaks. I found it a thrilling experience to approach the edge of a living volcano.

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The views from the upper slopes are wide and elemental. Lake Shikotsu spreads out in a perfect circle to the north. Beyond it rise the forested summits of Mt Eniwa (恵庭岳) and Mt Fuppushi (風不死岳), forming a ring around the caldera. To the south, the plains of Tomakomai stretch toward the Pacific.

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The hiking course is short but unforgettable. From the trailhead near the 7th Station, the path climbs quickly through scrubby vegetation before emerging onto the bare volcanic plateau. The landscape is lunar with grey ash, scattered boulders and the looming dome of Tarumae ahead. I was thrilled to see the steaming, spitting dome when I emerged onto the ridge. The standard route circles the dome on a safe outer trail, offering close views of the steaming crater while avoiding restricted zones. The final ascent to the summit ridge is gentle, leading to a broad, windy crest where the caldera and lake unfold in a sweeping panorama.

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