What Is Mount Yotei, the Volcano You See from Niseko?

Published 2026-10-04 · Sources checked 2026-10-04 · Treasure Hunting Co., Ltd.

This guide is for visitors who see the cone-shaped mountain across the valley from Niseko and want to know what it is. It also covers what you need to know before you climb it, in summer or in winter.

The facts come from the Japan Meteorological Agency (JMA) volcano catalogue, Kutchan Town's Mount Yotei pages, and the Ministry of the Environment. We read them on 4 October 2026. Hut dates and fees change each season, so check Kutchan Town's page before you go.

What Mount Yotei is

JMA describes Yoteizan as a conical stratovolcano, 1,898 m high, in the southwest of Hokkaido. The summit has a crater 700 m across. Smaller craters sit on the west-southwest flank.

Its other name is Ezo-Fuji, used by both JMA and Kutchan Town. Kutchan Town says the name comes from its likeness to Mount Fuji. The town also says it is one of the mountains on Japan's list of 100 famous mountains.

Kutchan Town gives the mountain an area of 6,826 hectares. JMA notes that the Shiribetsu River runs around its eastern, northern and western sides.

Mount Yotei is a separate volcano from the Niseko range. JMA lists the Niseko volcano group as its own entry, with Niseko Annupuri at 1,308 m.

Is it still active?

JMA's catalogue says Yotei's activity began about 50,000 to 60,000 years ago. Lava from an eruption about 4,000 years ago reached part of what is now Kutchan.

The last eruption, at the summit, was about 2,500 years ago. JMA states that there are no records of volcanic activity in historical times. It also says no fumarolic activity is seen at present.

A national park mountain

Kutchan Town's English Q&A says the Yotei area has been part of Shikotsu-Toya National Park since 1950. Work that may affect the environment, such as building or land use, is strictly controlled. The rules it lists for visitors:

• Do not litter, do not seek out animals or plants, and do not feed wild animals.
• Do not set up tents outside designated campgrounds.
• Do not enter the area by snowmobile.
• Stay on the trail, and fit a protective cap to the tip of any trekking pole.
• Keep pets on a leash and carry out their waste. Releasing any animal above the 5th station is prohibited.

Kutchan Town says more than 100 kinds of alpine plants flower above 1,700 m from early July to early August. It also says more than 130 kinds of wild birds live on the mountain.

Climbing it in summer

Kutchan Town calls Mount Yotei a mountain for intermediate to advanced climbers. The round trip takes about 10 hours, so the town asks you to plan a day climb with care.

It lists four trails, with approximate times from the trailhead to the crater rim:

• Kutchan-Hirafu Trail: about 4 hours 25 minutes, plus about 45 minutes to the peak.
• Makkari Trail: about 4 hours 40 minutes, plus about 40 minutes to the peak.
• Kimobetsu Trail: about 4 hours 15 minutes, joining the peak directly.
• Kyogoku Trail: about 4 hours 15 minutes, plus about 5 minutes to the peak.

The town says these are guide times for the shortest routes. Weather and personal pace can change them.

There is nowhere to refill water on the trail, and the hut supplies no food or water. Bring everything you need. The town notes a height gain of about 1,500 m and a usual temperature gap of 10°C from base to top. Winds of 5 to 10 m/s can blow above the tree line near the 9th station.

Submit a climbing plan to the nearest police station before you climb. Each trailhead also has an entry register to sign.

Getting to the trailheads

Kutchan Town says Donan Bus runs from JR Kutchan Station toward the Kutchan-Hirafu and Makkari trails. Buses are few, so check the timetable first.

• For the Kutchan-Hirafu Trail, get off at the Mt. Yotei Trail Head stop, served by Donan Bus and Niseko Bus. The trailhead is 1.8 km away.
• For the Makkari Trail, get off at the Yotei Nature Park stop on Donan Bus. The trailhead is 1.8 km away.
• There is no public transport to the Kimobetsu or Kyogoku trails.

The mountain hut

The hut sits between the 9th stations of the Kutchan-Hirafu and Makkari trails. The Ministry of the Environment built the current hut in 2014. It is there for sudden weather changes and climbers who feel unwell.

Kutchan Town's notice says staff are planned to stay at the hut from 12 June to 11 October 2026. The town's Japanese hut page lists these points:

• The suggested contribution is 3,000 yen for an overnight stay and 300 yen for a rest stop.
• Overnight stays are capped at 10 people a day, to keep space for emergencies.
• If you are thinking of staying, call the office before you fix your flights. The office does not answer on weekends or public holidays.
• Blankets and sleeping bags are not rented at present. Take used toilet paper home.
• No tents are allowed around the hut.

Bears, hornets and emergencies

Kutchan Town reported that on 24 July 2026 footsteps thought to be a bear's were heard just below the 1st station of the Hirafu trail. Its advice for anyone heading into the hills:

• Do not go alone; move in a group.
• Make noise as you walk, for example with a bear bell.
• Do not leave or bury food or rubbish. Take it all home.
• Turn back if you see droppings, footprints or other bear signs.
• Where bears have been seen, do not move about at dawn or dusk.

On 25 September 2026 the town warned that hornets were active. It advised against black clothing, strong scents and shiny items. If stung, the town says to see a doctor quickly, even if symptoms seem mild.

If you are injured, Kutchan Town says to stay where you are and call for help. If your phone has reception, call 119 and ask for rescue. Turn on any GPS before you call.

In winter

Kutchan Town says there are no specific rules for entering the mountain in winter. It asks climbers to arrange insurance, submit a climbing plan and prepare proper equipment.

Its Japanese page warns of many dangers in winter, including getting lost and avalanches. It asks you never to climb alone and to wear an avalanche beacon. After mid-October the hut is unstaffed, and you enter by a ladder to the second floor.

What we could not verify, and therefore left out

• Bus times and fares to the trailheads. Kutchan Town asks you to check the bus timetables in advance, and we did not read a current one.
• The Ministry of the Environment's own description of Mount Yotei. Its English Shikotsu-Toya National Park page did not mention the mountain in our copy.
• Current volcano alert information. We read only the JMA catalogue entry, not a live bulletin.
• Guided climbs and private campsites.

Related guides

• How do you get to Niseko from New Chitose Airport or Sapporo?
• What are the Niseko Rules, and how do you stay safe off-piste?

Sources

All URLs retrieved 2026-10-04.

1. 16. Yoteizan, National Catalogue of the Active Volcanoes in Japan (JMA) — (height, shape, crater, Ezo-Fuji, Shiribetsu River, age, eruptions, no historical activity, no fumaroles)
2. 17. Niseko, National Catalogue of the Active Volcanoes in Japan (JMA) — (Niseko volcano group listed separately; Niseko Annupuri 1,308 m)
3. 羊蹄山情報 Mount Yotei information (Kutchan Town) — (Ezo-Fuji name, 100 famous mountains, area, alpine plants and birds, 10-hour climb, water, bear advice, winter cautions)
4. Mt. Yotei Q&A, English (Kutchan Town) — (national park since 1950, visitor rules, trail times, weather, climbing plan, buses to trailheads, hut location and history, emergencies, winter)
5. 羊蹄山情報 ニュース Mount Yotei news (Kutchan Town) — (2026 hut staff period, bear report of 24 July 2026, hornet warning of 25 September 2026)
6. 避難小屋について About the mountain hut (Kutchan Town) — (hut contributions, overnight cap, booking by phone, no rentals, toilet paper, no tents, winter entry)
7. Shikotsu-Toya National Park (Ministry of the Environment) — (the national park's official English page)