Urabandai & Goshikinuma Guide 2026: The Five Coloured Ponds

In July 1888, Mount Bandai blew its northern face apart in one of the deadliest volcanic eruptions in Japanese history. The landslide buried villages, dammed the valleys, and created — almost overnight — the lake-strewn highland now called Urabandai, the “back of Bandai”. Today it is among the loveliest and gentlest walking country in Tohoku, a plateau of more than three hundred ponds and lakes threaded with easy trails, with the great breached crater still looming above. This guide covers the highlight walk, the lake at its foot, when to come, and how to turn it into an unhurried two-day nature trip.

At a glance: best as a 2-day trip, late April to November · the highland is snowbound and most trails close in winter · budget roughly ¥12,000–28,000 per person for transport, meals and a mid-range room, more for a resort hotel · for walkers, photographers and anyone wanting easy mountain scenery · base a night at an Urabandai resort, with Lake Inawashiro below for the second day.

The Goshikinuma: the five coloured ponds

The signature walk of Urabandai is the Goshikinuma, the “five coloured ponds” — though there are more than five — strung along a flat, well-maintained trail of about 3.6 kilometres through birch and reed. The wonder is the colour. Dissolved volcanic minerals and the angle of the light turn the ponds turquoise, emerald, jade and a milky cobalt, sometimes several shades within a single pool, and the colours genuinely shift with the weather and the season. The largest, Bishamon-numa at the eastern trailhead, has rowing boats and a clear view to Mount Bandai; the smaller ponds deeper in the woods are quieter and stranger.

The path is gentle enough for any reasonably fit walker and takes about 80 minutes one way. You can walk it as an out-and-back to the prettiest ponds, or go end to end and catch a bus back from the far trailhead near Lake Hibara. Wear proper shoes, bring water, and aim for morning light, which is kindest on the eastern ponds.

A word on why the colours happen, because it is the question everyone asks on the trail: the ponds are fed by springs carrying dissolved minerals washed out of the volcano — iron, sulphur, aluminium and silica in varying concentrations — and these scatter and absorb light differently from one pond to the next, so a pool can read jade in flat morning light and turquoise under the midday sun. Some ponds are acidic enough that little grows in them, which keeps the water startlingly clear; others support reeds and carp. The effect is strongest on a bright day after rain, when the water is full and the light is clean, and it is worth walking slowly and doubling back to a favourite pond rather than marching straight through.

Lake Hibara and the eruption landscape

The largest of the lakes born from the 1888 eruption is Lake Hibara, formed when the landslide dammed the Hibara River and slowly drowned the old village of the same name — in very low water, the torii of its submerged shrine still shows above the surface. It is a long, island-dotted lake ringed by forest, with sightseeing boats and kayaking in the green season, lakeside cafés, and ice fishing for pond smelt under huts in winter. A short cruise, or simply a stop at one of the viewpoints on the western shore road, gives a sense of the scale of what the eruption rearranged, and on a still afternoon the reflection of Mount Bandai is the classic Urabandai image.

For a comfortable night, the Urabandai resort hotels under the mountain combine an onsen, an Aizu-leaning dinner and easy access to both the highland trails and the lake below — the relaxed end of a day outdoors.

Down to Lake Inawashiro

The second day drops to Lake Inawashiro, Japan’s fourth-largest lake, clear enough to have earned the name “heavenly mirror lake” for the reflection of Mount Bandai it throws on a calm day. Two things on its north shore are worth the morning. Tenkyokaku is a graceful white Renaissance-style villa built in 1908 as an imperial retreat and now open to visitors — you can walk the parquet ballroom, the period reception rooms and the verandas above the lake, a rare intact glimpse of late-Meiji aristocratic taste. A short way along is the Noguchi Hideyo Memorial Hall, the museum and preserved thatched birthplace of the bacteriologist whose face is on Japan’s ¥1,000 note, who rose from a poor Inawashiro farmhouse to research on syphilis and yellow fever in New York and Africa, where he died of the disease he was studying in 1928.

Close on the open eastern shore at Shidahama, the easiest place to stand at the water’s edge with the mountain across the lake — a low-key swimming beach in summer, and one of the best places to see the thousands of whooper swans that gather here in winter. The full two-day route, with the Goshikinuma walk, the lakes and the villa timed end to end, is laid out in our Urabandai lakes nature itinerary.

When to go, and how to get there

Urabandai is a green-season and autumn destination. The Goshikinuma trail is best snow-free from roughly late April to November; in deep winter it requires snowshoes and most facilities close, though the area becomes a quiet ski-and-ice-fishing landscape. Autumn colour, usually peaking in mid-to-late October, is superb. Summer is cool and green, a welcome escape from the lowland heat.

By public transport, take the JR Banetsu West line to Inawashiro Station (reachable from Koriyama, about 80 minutes from Tokyo by Shinkansen, then a local train), and a bus up to the Goshikinuma trailhead in about 25 minutes. A rental car makes the lakes, the western shore road and the resort hotels far easier, and is the practical choice if you want to combine Urabandai with the Aizu sights — see our Aizu-Wakamatsu 2-day itinerary — or the spring blossom and onsen towns of our Fukushima cherry blossom guide.

FAQ

How long is the Goshikinuma trail and how hard is it? The main trail is about 3.6 kilometres and largely flat, taking around 80 minutes one way at an easy pace. It suits any reasonably fit walker; wear proper shoes and bring water. You can turn back partway or walk end to end and take a bus back from the far trailhead.

When is the best time to visit Urabandai? Late April to November for the trails, with autumn colour peaking in mid-to-late October. Winter buries the highland in snow — beautiful but the Goshikinuma path needs snowshoes and most facilities close.

How do I get to Urabandai and Lake Inawashiro from Tokyo? Take the Tohoku Shinkansen to Koriyama, then the JR Banetsu West line to Inawashiro Station — about two and a half to three hours total. From there, buses run up to the Goshikinuma trailhead, though a rental car makes the lakes and highland much easier.

Can I see Mount Bandai’s eruption landscape easily? Yes — the whole highland is the eruption landscape. The Goshikinuma ponds, Lake Hibara and the lakes were all formed by the 1888 collapse, and the breached crater is visible from the trails and the lake. The Bandai-Azuma area also has a seasonal mountain road for those wanting a high-altitude drive.

Is two days enough for Urabandai? Two days is ideal: one for the Goshikinuma walk and Lake Hibara with an onsen night, and a second for Lake Inawashiro, the Tenkyokaku villa and the Noguchi memorial. Add a third day to combine it with the Aizu-Wakamatsu sights or the spring blossom route.

Request a personalized quote from a local operator