Verified in Japan

Maebashi, Gunma / 赤城山・赤城大沼

Mt. Akagi and Lake Onuma

Mt. Akagi, one of Japan's 100 Famous Mountains, is a volcano whose main peak Kurobisan rises to 1,828 m; its caldera lake Onuma offers boating in summer and ice fishing for smelt when it freezes in winter.

Lake Onuma seen from a mountain trail, with a red shrine on a small peninsula and bare early-spring trees
Lake Onuma on Mt Akagi in spring (photo taken May 2014)Photo: Guilhem Vellut / Wikimedia Commons, CC BY 2.0 (resized) · License · Source

Last official check

25 Sept 2026

Traveler reports

0

Reports open in Phase 2

Next scheduled check

24 Dec 2026

Decide before you go

A short summary made from the official facts below. Check the rows for details.

Getting there
Train / Bus / Car

Before you go

Only facts we confirmed on official sources are shown. Anything else is listed under “Not yet confirmed”.

Getting there

About 85 minutes by bus from stop 6 at JR Maebashi Station, changing at Fujimi Onsen (about 60 minutes direct on weekends and holidays), to Akagi Hiroba-mae; 60 minutes by car from Maebashi IC.

Checked 25 Sept 2026 on a tourism board site
Not yet confirmed

Opening hours, Closed, Admission, Parking, Payment, Accessibility

we have not confirmed this on an official source yet. Check with the spot before you go.

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Address: Maebashi, Gunma (Japanese address: 群馬県前橋市富士見町赤城山)

Official site: https://www.maebashi-cvb.com/spot/1085

Location

Smaller pins are other spots nearby.

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Nearby spots

Distances are straight-line distances, not travel distances.

Crowds

Busiest season

The azaleas (500,000 plants of 14 kinds) usually peak from late May to mid-June, with large groves of Japanese azalea at Shinzakadaira, Miharashiyama and Kakumanbuchi.

Checked 25 Sept 2026 on a tourism board site
Not yet confirmed

Crowd level, Best time to visit, Peak time, Busiest days

no official source yet, and not enough traveler reports.

Latest traveler report
None yet

Traveler crowd data by time of day appears after 5 traveler reports (0 so far).

You can check typical busy hours in Google Maps ("Popular times" on the place's page). Open this spot in Google Maps

Verification log

  • 25 Sept 2026First check · Tourism board · https://gunma-kanko.jp/spots/670Access, seasons, description and coordinates read from a tourism organization's site.