Mt. Bandai — Active Volcano & Hiking in Bandai-Asahi National Park

Mt. Bandai (磐梯山, 1,816m) is an active stratovolcano that dominates Fukushima's central landscape, known as 'Aizu-Bandai-san' (会津磐梯山) in regional folk songs celebrating its symmetrical cone shape. The mountain last erupted catastrophically in 1888, when the northern face collapsed, killing 477 people and creating the debris field that formed Lake Inawashiro's surrounding wetlands and the Goshiki-numa colored ponds. The volcano remains active with fumaroles visible on the summit crater, though no major activity has occurred since 1888. The mountain is the centerpiece of Bandai-Asahi National Park, offering multiple hiking routes through alpine meadows, volcanic rock fields, and primeval beech forests.

The most popular summit trail ascends from Happōdai trailhead (5.5km, 3.5 hours ascent), gaining 1,200m elevation through forest zones before emerging above treeline onto volcanic scree. The summit rewards with 360-degree panoramas: Lake Inawashiro to the south, Goshiki-numa ponds to the north, and the distant Japan Alps on clear days. The mountain's dual personality — gentle southern slopes vs. collapsed northern cliffs — creates dramatic geological contrast visible from the summit. Climbing season runs May–October (snow-free); autumn (September–October) offers peak foliage and clearest skies.