National Parks · Yamagata, Fukushima, Niigata
Bandai-Asahi National Park
磐梯朝日国立公園ばんだいあさひこくりつこうえんBandai-Asahi Kokuritsu KōenPilgrim peaks, snow ranges and the lakes of a shattered volcano
Bandai-Asahi is one of Japan's largest national parks, spanning the mountains of Yamagata, Fukushima and Niigata. Designated in 1950, it joins the sacred Dewa Sanzan peaks, the wild Asahi and Iide ranges, the Azuma and Adatara volcanoes, and Mount Bandai with the lakes created by its catastrophic 1888 eruption.
Overview
Bandai-Asahi National Park covers a broad swathe of mountains across southern Tōhoku and is made up of four separate areas. In the north-west, the Dewa Sanzan and the Asahi mountains rise above the Shōnai plain of Yamagata. South of them, the Iide range forms a remote, heavily snowed massif on the borders of Yamagata, Niigata and Fukushima, reaching 2,128 m at Dainichi-dake. To the east lie the Azuma and Adatara volcanoes between Yonezawa and Fukushima city, and in the south-east Mount Bandai with the Ura-Bandai lakes and Lake Inawashiro.
The park was designated in 1950 and, at 1,866 km², is the third largest in Japan. It is known for beech forest, one of the largest continuous stretches in the country, and for the deep snow that lingers on the Asahi and Iide ranges into midsummer.
Its two halves have different characters. The western mountains are places of pilgrimage and wilderness, visited by yamabushi (mountain ascetics) and long-distance hikers. The eastern volcanoes, with their hot springs, crater lakes and scenic roads, are among the most visited landscapes of Tōhoku.
Landscape and formation
The Asahi and Iide ranges are non-volcanic, uplifted blocks of granite and older rocks, deeply dissected by rivers and holding snow patches through the summer. Gassan, by contrast, is a broad, eroded shield volcano, and the Azuma and Adatara groups are active volcanic chains with fumaroles, crater lakes and sulphur deposits; Issaikyō-zan in the Azuma group and Adatara-yama are monitored by the Japan Meteorological Agency.
Mount Bandai (1,816 m) shows the power of volcanic collapse. On 15 July 1888 a steam explosion blew out the Kobandai peak, and a debris avalanche swept down the northern side. The horseshoe-shaped crater is still visible from Ura-Bandai, and the blocked valleys became a plateau of lakes. Lake Inawashiro to the south is older, formed when earlier eruptions of Bandai dammed a tectonic basin.
Highlights
- 磐梯山Bandai-san
The 1,816 m 'Aizu Fuji', symmetrical from the south and gaping from the north, where its 1888 collapse crater opens.
Goshiki-numa
五色沼Goshiki-numaA chain of ponds in Ura-Bandai whose waters range from cobalt to emerald, linked by a forest nature trail.
- 猪苗代湖Inawashiro-ko
Japan's fourth-largest lake, called the 'Heavenly Mirror Lake', with wintering swans on its northern shore.
- 月山Gassan
The 1,984 m central peak of the Dewa Sanzan, symbolising the past and the world of the dead, with a shrine on its summit.
Haguro-san
羽黒山Haguro-sanThe lowest of the three sacred mountains, climbed by 2,446 stone steps through a cedar avenue past a five-storey pagoda.
Jōdo-daira and Azuma-Kofuji
浄土平・吾妻小富士Jōdo-daira, Azuma-KofujiA volcanic plateau on the Bandai-Azuma Skyline, with a short climb to the rim of the perfectly round Azuma-Kofuji crater.
Iide mountains
飯豊連峰Iide renpōA long, snowy ridge of 2,000 m peaks with flower meadows and huts, among the wildest ranges in Honshu.
Nature
Ecology
Heavy winter snow from the Sea of Japan shapes the park's ecology. Siebold's beech forest covers the mid-slopes of the Asahi and Iide ranges in one of Japan's largest continuous stands, and above it, snowbeds and wind-blasted ridges support rich alpine meadows at relatively low elevations. The Iide range in particular is known for its snow-fed flower fields and endemic plants.
Large mammals are common: Asian black bears, Japanese serows and macaques live throughout the forests, and golden eagles and mountain hawk-eagles hunt over the ridges. Around Ura-Bandai and Lake Inawashiro, lake and marsh habitats support waterbirds, including the whooper swans that winter at Inawashiro.
Flora
Siebold's beech forest
ブナ林buna-rinVast primeval beech forest on the Asahi and Iide ranges, the source of many rivers.
Iide gentian
イイデリンドウIide-rindōA gentian found only in the Iide mountains, flowering in summer.
Azuma-hoshikusa
アズマホシクサAzuma-hoshikusaA small pipewort named after the Azuma area, growing in wet ground.
Haguro-san cedar avenue
羽黒山のスギ並木Haguro-san no sugi namikiHundreds of great Japanese cedars along the pilgrim steps, a Special Natural Monument.
Rhododendrons
シャクナゲshakunageFlowering along the ridges of Azuma and Adatara in early summer.
Fauna
Asian black bear
ツキノワグマtsukinowagumaCommon in the beech forests, feeding on beech nuts in autumn.
Japanese serow
ニホンカモシカnihon-kamoshikaFrequently seen on the snowy slopes of the Asahi and Iide ranges.
Golden eagle and mountain hawk-eagle
イヌワシ・クマタカinuwashi, kumatakaBoth raptors breed in the remote western mountains.
Whooper swan
オオハクチョウōhakuchōWinters in large numbers on the northern shore of Lake Inawashiro.
Culture
The Dewa Sanzan have been a centre of Shugendō, the syncretic mountain religion, for some 1,400 years; tradition credits their opening to Prince Hachiko, son of Emperor Sushun. Yamabushi still conduct ascetic retreats on Haguro-san, and pilgrims in white visit Gassan in summer. At the foot of Yudono-san, temples preserve sokushinbutsu, monks who mummified themselves through fasting and meditation. The haiku poet Matsuo Bashō climbed all three mountains in 1689 and wrote some of the verses of The Narrow Road to the Deep North there.
In the east, the Aizu region's history is tied to Bandai; Inawashiro was the birthplace of the bacteriologist Noguchi Hideyo. The poet-sculptor Takamura Kōtarō made Adatara famous with his wife Chieko's line that the real sky is the one above Adatara-yama.
Dewa Sanzan Shrine
出羽三山神社Dewa Sanzan-jinjaThe joint shrine hall on Haguro-san, the Sanjin Gōsaiden, enshrining the deities of all three mountains.
Five-storey pagoda of Haguro-san
羽黒山五重塔Haguro-san gojū-no-tōAn unpainted wooden pagoda in the cedar forest, a National Treasure.
Yudono-san Shrine
湯殿山神社Yudono-san-jinjaA shrine whose object of worship is a hot spring flowing over a rock; photography is forbidden there.
Bandai-san Eruption Memorial Museum
磐梯山噴火記念館Bandai-san Funka KinenkanMuseum in Ura-Bandai on the 1888 eruption and volcanology.
History
593 (traditional)
Prince Hachiko is said to open the Dewa Sanzan as sacred mountains.
1689
Matsuo Bashō climbs Haguro-san, Gassan and Yudono-san on his northern journey.
1888
On 15 July, the eruption and collapse of Mount Bandai bury villages and create the Ura-Bandai lakes.
1950
Bandai-Asahi National Park is designated on 5 September.
1959
The Bandai-Azuma Skyline road opens through the Azuma volcanoes.
2011
Mount Bandai is recognised as a Japanese Geopark.
Through the seasons
Spring
Snow corridors on the Bandai-Azuma Skyline when it reopens; Gassan's ski season starts in April and runs into summer.
Summer
The pilgrimage and hiking season on the Dewa Sanzan, the Asahi and the Iide ranges, with alpine flowers from July; mountain huts open.
Autumn
Beech forest and the Ura-Bandai lakes turn gold and red in October; one of Tōhoku's classic autumn drives on the Skyline and the Bandai-Azuma Lake Line.
Winter
Very deep snow closes the high roads; ski resorts operate around Bandai and Inawashiro, swans winter on the lake, and yamabushi hold winter retreats on Haguro-san.
Routes and trails
Goshiki-numa nature trail
An easy walk of about 3.6 km linking the ponds between Bishamon-numa and Lake Hibara.
Haguro-san stone steps
The 2,446-step pilgrim path through the cedar avenue from Zuishin-mon gate to the summit shrine; about an hour's climb.
Gassan from Hachigōme
A summer pilgrim path from the 8th station across alpine moors to the summit shrine, continuing down to Yudono-san for the full traverse.
Mount Bandai from Happōdai
The shortest route to the summit through beech forest and past the crater rim; about 4 to 5 hours return.
Iide range traverse
A multi-day hut-to-hut route along the main ridge, often with snow crossings into July.
Practical notes
- The Tōhoku and Yamagata Shinkansen serve Fukushima, Kōriyama and Yonezawa; Tsuruoka and Shōnai airport are the gateways to the Dewa Sanzan, and the JR Ban'etsu West Line runs to Inawashiro.
- Mountain roads such as the Bandai-Azuma Skyline and the Gassan approach road are closed from late autumn to spring.
- Adatara-yama and the Azuma volcanoes emit volcanic gas; stay on trails and respect closures and alert levels.
- Bears are common across the park; the Iide and Asahi ranges require full mountain equipment and snow skills early in the season.
- At Yudono-san Shrine and on parts of the pilgrim routes, photography and talking about the sacred site are restricted by tradition.
Frequently asked questions
What are the Dewa Sanzan?
The Three Mountains of Dewa, Haguro-san, Gassan and Yudono-san, are sacred peaks of the Shugendō mountain religion in Yamagata. Pilgrims traditionally visit all three, symbolising present, past and future life, or birth, death and rebirth.
How did the Goshiki-numa ponds form?
In the eruption of 15 July 1888 the northern flank of Mount Bandai collapsed, burying villages and killing several hundred people. The debris dammed rivers and created hundreds of lakes and ponds, including Hibara-ko, Onogawa-ko, Akimoto-ko and the colourful Goshiki-numa ('five-coloured ponds').
Is Lake Inawashiro in the park?
Yes. Lake Inawashiro, the fourth-largest lake in Japan, lies at the southern foot of Mount Bandai and belongs to the park's Bandai area.
Can you ski on Gassan in summer?
Gassan receives so much snow that its ski area only opens in spring, once the approach road is cleared, and skiing continues into early summer on the lingering snowfields.
What is the Bandai-Azuma Skyline?
A scenic mountain road through the Azuma volcanoes from Fukushima city to Tsuchiyu Pass, passing the steaming Jōdo-daira plateau and Azuma-Kofuji crater; it is closed in winter.
Related
Sources
- 1.磐梯朝日国立公園 (opens in a new tab) — 環境省
- 2.国立公園の概要 (opens in a new tab) — 環境省
- 3.Bandai-Asahi National Park (opens in a new tab) — Ministry of the Environment, Japan
- 4.日本ジオパークネットワーク (opens in a new tab) — 日本ジオパークネットワーク