Mount Gassan

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Mount Gassan
Precincts of Gassan jinja.JPG
The summit and Gassan Shrine
Highest point
Elevation 1,984 m (6,509 ft) [1]
Listing 100 Famous Japanese Mountains Three Mountains of Dewa
Coordinates 38°32′56″N140°01′37″E / 38.54889°N 140.02694°E / 38.54889; 140.02694 Coordinates: 38°32′56″N140°01′37″E / 38.54889°N 140.02694°E / 38.54889; 140.02694
English translationMoon Mountain
Language of name Japanese
Yamagata-ken geolocalisation relief.svg
Red triangle with thick white border.svg
Mount Gassan
Mountain type Stratovolcano [1]
Easiest route Hiking

Mount Gassan (月山, Gassan) is the highest of the Three Mountains of Dewa in the ancient province of Dewa (modern-day Yamagata prefecture). The Gassan Shrine stands at the mountain's summit, 1,984 metres (6,509 ft) above sea level.


It has a long hike from its trailhead and usually requires about 4-5 hours to hike it. Visitors should be aware of the weather and not try to hike it during windy or days with heavy rain. Also note that the trail is not paved and in some parts requires use of hands to clear certain parts of the trail.

Due to heavy winter snowfall, the mountain and shrine are inaccessible for long periods of the year; however, 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. [2]

See also

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  1. 1 2 "Gassan". Japanese Quaternary Volcano Database. Geological Survey of Japan, AIST. Retrieved 13 May 2019.
  2. 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。