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Annaka · JP

石尊山

Sekison Mountain (石尊山, Sekison-san) is a 570.9-metre 'satoyama' village peak on the Akuma ridge where Gunma's Annaka City meets Takasaki. It is one of the Gunma 100 Mountains, long venerated under the old rock-deity (Ishison/Sekison) faith, and is reached by a gentle final climb of stone steps. The attraction is the 'Annaka Alps', a ridgeline loop that links Gorente-yama (405 m), Sekison and the highest point Toya-yama (605 m), with JR Annaka-Haruna Station as the trailhead. The full course runs about 11 km for roughly five hours; shorter out-and-back and figure-eight options let you pick the effort, from a beginner-friendly 2¼-hour walk to the full loop. On a clear day the open lookouts frame Mount Myogi, the Haruna and Kusatsu-Shirane ranges and distant Asama, while the summit itself is crowned by a cluster of small stone shrines. A city-designated historic site, the forty-seven Ako loyalist stone statues, sits along the route, adding a layer of history and folk faith to a friendly low-level hike.