is a stratovolcano in the ancient province of Dewa (modern-day Yamagata prefecture) and the highest of the Three Mountains of Dewa. The Gassan Shrine stands at the mountain's summit, above sea level.
The hike from its trailhead to the summit usually requires about 4-5 hours and can be challenging. Visitors should be aware of the weather and not try to hike it on days with wind or heavy rain. The trail is not paved and in some parts requires the use of hands to navigate certain parts of the trail.
Due to heavy winter snowfall, the mountain and shrine are inaccessible for long periods of the year; however, this also means that skiing is possible on the mountain from April to mid-summer.
The mountain is interesting in that it contains elements of both shield volcanoes as well as stratovolcanoes, although it is classified as a stratovolcano.以前はアスピーテに分類されていたが、現在では成層火山が侵食や爆発によりなだらかになったものであるという説が有力である。詳しくはノート及び火山#地形による分類を参照。
Gallery
See also List of volcanoes in Japan List of mountains in Japan References
External links
Mount Gassan Travel: (Japanese) Mt. Gassan Page: (English) Mount Gassan Travel: (English)