Mountains · Hokkaido
Mount Yōtei
羊蹄山ようていざんYōtei-zanEzo Fuji: Hokkaido's symmetrical volcano above the Niseko powder fields.
Mount Yōtei (羊蹄山), 1,898 m, is a near-perfect volcanic cone in south-western Hokkaido, known as Ezo Fuji for its resemblance to Mount Fuji. Rising in isolation above the Niseko and Kutchan area, it is an active volcano whose porous slopes feed famous springs at its foot.
Overview
Mount Yōtei stands isolated in the Shiribeshi region west of Sapporo, a symmetrical cone whose form invites comparison with Fuji. Towns and farms ring its base – Kutchan, Niseko, Makkari, Kimobetsu and Kyōgoku – and its outline dominates views from the Niseko ski resorts across the valley.
The mountain is a classic hiking objective: four steep trails lead to the rim of a large summit crater, the Chichigama ("father cauldron"), from where the view stretches over the Niseko range, Lake Tōya and the Sea of Japan. In winter, its flanks attract backcountry skiers.
Landscape and formation
Yōtei is a young stratovolcano that grew over the last several tens of thousands of years, built of andesitic and basaltic lava and ash. Its summit crater, about 700 m across and 200 m deep, is flanked by smaller craters. No eruption is recorded in historical times, but the Japan Meteorological Agency classes the volcano as active.
The porous volcanic body stores enormous amounts of water, which reappears as cold springs around the foot and supports agriculture and local drinks production.
Highlights
Chichigama
父釜ChichigamaThe main summit crater, circled by a rim path of about 1 to 1.5 hours with the highest point on its western side.
Fukidashi Park
ふきだし公園Fukidashi kōenA park in Kyōgoku where Yōtei's spring water gushes from the lava in large volumes.
Hangetsu-ko
半月湖Hangetsu-koA small crescent-shaped crater lake at the Kutchan trailhead.
Ecology
Because Yōtei is isolated and northern, the treeline lies at around 1,500 m and alpine plants grow close to the crater rim. The flora includes species at the edge of their range, and the summit meadows bloom in July.
Flora
Ezo-kozakura
エゾコザクラezo-kozakuraA pink primrose of the crater slopes.
Erman's birch
ダケカンバdakekanbaForms the twisted treeline forest below the alpine zone.
Fauna
Brown bear
ヒグマhigumaPresent in the forests around the mountain.
Northern pika
エゾナキウサギezo-nakiusagiLives in rocky areas of the upper slopes.
Culture
The Ainu name Makkarinupuri refers to the mountain near the Makkari river; Ainu tradition knew it as a sacred peak. The Chinese characters 後方羊蹄 appear in the Nihon Shoki for a place in the north, which later gave the region its name Shiribeshi. Its resemblance to Fuji made Ezo Fuji the popular name among Japanese settlers.
Kutchan
倶知安町Kutchan-chōThe main town at the foot, gateway to both Yōtei and the Niseko resorts.
History
7th century
The Nihon Shoki mentions Shiribeshi (後方羊蹄), later linked to the mountain.
1949
Shikotsu-Tōya National Park is designated, including Yōtei.
Through the seasons
Spring
Snow covers the upper cone into June; spring ski mountaineering is popular.
Summer
The hiking season from late June to early October; alpine flowers around the crater in July.
Autumn
Colours on the slopes in late September and October; first snow often in October.
Winter
Deep powder snow and strong winds; ski descents of the crater and flanks are for experienced backcountry skiers only.
Routes and trails
Makkari route
From the south-west, about 4.5–5 hours up; the most popular and gentlest gradient, but still long.
Kutchan (Hirafu) route
From the north-west near Hangetsu-ko, about 5 hours up; steep, with views over Niseko.
Kyōgoku route
From the north-east, about 5 hours up; the steepest route with little shade.
Niseko (Hirafu) route
From the west, about 5 hours up; quieter.
Practical notes
- The trailheads are reached by car or taxi from Kutchan, Makkari, Kyōgoku or Kimobetsu; Kutchan is about two hours from Sapporo by train or bus.
- There is no water on the routes; carry enough for a full day.
- Brown bears are present; carry a bell or spray.
- Yōtei is monitored as an active volcano by the Japan Meteorological Agency.
Frequently asked questions
How long does it take to climb Mount Yōtei?
All four trails climb about 1,500–1,600 m from their trailheads. The ascent takes 4.5–5.5 hours and the descent about 3.5 hours, so it is a long, strenuous day hike.
Why is it called Shiribeshi-yama?
The mountain's old name, written 後方羊蹄山, is read Shiribeshi-yama after the ancient district name; Fukada Kyūya listed it under this name. The modern name Yōtei-zan comes from an alternative reading of the last characters.
Is there a hut on Mount Yōtei?
The Yōtei-zan hut near the summit crater offers basic shelter in summer; conditions and management should be checked in advance.
Where does the spring water come from?
Rain and snowmelt soak into the volcano and re-emerge after years at springs around its base, most famously at Fukidashi Park in Kyōgoku.
Related
Sources
- 1.日本の主な山岳標高 (opens in a new tab) — 国土地理院 (Geospatial Information Authority of Japan)
- 2.支笏洞爺国立公園 (opens in a new tab) — 環境省 (Ministry of the Environment)
- 3.火山登山者向けの情報提供ページ（羊蹄山） (opens in a new tab) — 気象庁 (Japan Meteorological Agency)
- 4.北海道庁ホームページ (opens in a new tab) — 北海道 (Hokkaido Government)