🌏 Destinations · All 🇯🇵 Japan · full guide Nikko Guide Nikko Attractions Nikko Itinerary 💧 Oku-Nikko Guide 🧭 Japan Travel Prep About Contact 🇹🇭 ไทย🇬🇧 English🇨🇳 中文🇪🇸 Español🇫🇷 Français
💧 Oku-Nikko · Tochigi Prefecture

Oku-Nikko — Kegon Falls, Lake Chuzenji and the Senjogahara Marsh

Climb above Nikko's old shrines up a road of 48 hairpins and you reach the side of Nikko few travellers ever see — a 97-metre waterfall, Japan's highest mountain lake, a flat marsh made for walking, and a sulphur onsen to soak in at the end.

Home › 🇯🇵 Japan › Nikko › Oku-Nikko
Start Here

There's More to Nikko Than Shrines —a Little Higher Up, Waterfalls and a Lake Are Waiting

Most people come to Nikko for the gilded Tosho-gu shrine and then head home, missing the best part. Stay on the bus another 45 minutes or so up a road of tight switchbacks and you reach "Oku-Nikko", which translates literally as inner Nikko — a world of high mountains with the 97-metre Kegon Falls, Lake Chuzenji (the highest of all Japan's natural lakes), and a wide, flat marsh that's an easy stroll. Straight up: this is a completely different side of Nikko from the town.

This page follows the route in order, from the Irohazaka winding road that climbs the mountain up to the waterfall, the lake, the Senjogahara marsh, and finally the sulphur springs of Yumoto Onsen. It also covers how to ride the bus up from Nikko town, when the autumn leaves are at their best, and whether you're better off staying the night up top or doing it as a day trip.

💧 Get the word "Oku-Nikko" straight first: it isn't the name of a town — it's the name for the high mountain area to the west of Nikko town, inside Nikko National Park. It covers Lake Chuzenji, Kegon Falls, Mount Nantai, the Senjogahara marsh, and Yumoto Onsen, all linked by a single bus line. You can plan a one-day waterfall-lake-marsh loop and tick them off in a row.
💧
A Legendary Waterfall
Kegon Falls is 97 m tall, one of Japan's three most beautiful waterfalls.
🏞️
The Highest Lake
Lake Chuzenji sits at 1,269 m below the Mount Nantai volcano.
🥾
Easy Hiking
Senjogahara's flat wooden boardwalk is doable for beginners too.
🍁
Stunning Autumn Colour
Irohazaka and the lake peak in mid to late October.
Overview Before You Go

Oku-Nikko Highlights — What's There and How to Reach It

Every spot is listed in the order the bus climbs from Nikko town — get the big picture of which ones suit you, then dive into the detail in the sections below (travel times are approximate; check the latest bus timetable before you go).

SpotTypeKnown forFrom NikkoGood for
IrohazakaIrohazakaWinding road48 hairpins, autumn-leaf viewsPassed on the way upViews / autumn leaves
Kegon FallsKegon FallsWaterfall97 m tall, lift to the base~45 min + 5-min walkEveryone · the highlight
Lake ChuzenjiLake ChūzenjiLake1,269 m up, sightseeing cruiseBy the Chuzenji Onsen stopSlow days / photos
Akechidaira RopewayAkechidairaPanoramaFalls + lake + Nantai viewAkechidaira stop ~40 minView photographers
SenjogaharaSenjogaharaMarsh plateauFlat wooden boardwalk, ~1,400 mRyuzu / Akanuma stopsEasy hiking
Yumoto OnsenYumoto OnsenOnsenCloudy sulphur water by Lake YunokoEnd of the line ~80 minSoaking / overnight
🚌 Travel tip: every spot above sits on the one Tobu bus line that runs Nikko → Chuzenji Onsen → Yumoto Onsen. If you want to see several places in a day, buy an unlimited-ride bus pass — it's far better value than paying per ride, because distances are long and you'll hop on and off at several stops. Check the latest fares and timetable at the Tobu counter in front of the station.
6 Must-See Spots

The Things to Do in Oku-Nikko

Everyone who's made the trip up agrees the extra bus ride into the mountains is worth it — we've listed them in the order the bus climbs from Nikko town, so you can tick them off in a row in one day, or just pick the ones that suit you.

Kegon Falls, 97 metres tall in Oku-Nikko, with autumn-coloured leaves and a rainbow 💧 Highlight1
Kegon Falls
Kegon Falls · Okunikko

Nikko's most famous waterfall drops straight down a 97-metre cliff and ranks among Japan's three most beautiful. An old lift from 1930 takes you down about 100 metres to a close-up platform at the base, where the cool spray drifts over you. The upper viewpoint is free; pay the lift fare only if you want to go down to the base.

📍Location: by Lake Chuzenji, ~5-min walk from the Chuzenji Onsen bus stop
🎟️Lift fare: around 570 yen for an adult · upper viewpoint free (2026 prices may change)
🚌Getting there: Tobu bus from Nikko, off at Chuzenji Onsen ~45 min
💡Tip: Flow is heaviest after rain or snowmelt; autumn leaves frame the falls best in mid to late October.
Nikko Attractions →
Lake Chuzenji with the Mount Nantai volcano behind it in Oku-Nikko 🏞️ Mountain Lake2
Lake Chuzenji
Lake Chūzenji · Okunikko

Japan's highest natural lake sits at 1,269 metres, formed by lava from the Mount Nantai volcano (2,486 m) that rises behind it like a backdrop. The water is calm and clear and the air stays cool all year. Walk the shore or take a sightseeing boat — and it's this lake that feeds Kegon Falls just downstream.

📍Location: foot of Mount Nantai, beside the Chuzenji Onsen area
⛴️Cruise: the sightseeing boat loops the lake in ~55 min, hop on and off at several piers
🚌Getting there: get off at the Chuzenji Onsen stop, the shore is right there
💡Tip: Pair the lake with Kegon Falls in one stop — they're right next to each other.
Nikko Attractions →
🥾 🍁 Marsh Plateau3
Senjogahara Marsh
Senjogahara Marsh · Okunikko

A wide wetland of about 400 hectares at roughly 1,400 metres, once a shallow lake that silted up into grassland. A raised wooden boardwalk runs the whole length, so it's a flat, easy walk with no climbing — beginners can manage it. Lush green in summer, the grasses turn gold and red across the whole plain in autumn.

📍Location: above Lake Chuzenji, inside Nikko National Park
⏱️Walking time: Ryuzu→Akanuma ~2 hrs · longer route to Yumoto ~2.5–3 hrs
🚌Getting there: off at Ryuzu no Taki or Akanuma on the Yumoto bus line
💡Tip: Autumn leaves peak in early Oct (higher than other spots). Wear comfy shoes and bring water.
Nikko Attractions →
🛣️ 🍁 48 Hairpins4
Irohazaka Winding Road
Irohazaka Winding Road

A mountain road that climbs from Nikko town (~600 m) up to Lake Chuzenji (~1,270 m) through a total of 48 hairpin bends, named after the old Japanese "iroha" syllabary, which has 48 characters. It splits into an uphill line (20 bends) and a downhill line (28 bends), and in autumn the whole valley turns red and orange. Your bus drives right along it.

📍Location: between Nikko town and Lake Chuzenji
🍁Autumn leaves: peak mid to late Oct (heavy traffic on weekends)
🚌Getting there: ride the Tobu bus up the mountain and you'll pass these bends
💡Tip: Sit on the valley-view side · go early in autumn to dodge the long jams.
Nikko Attractions →
🚠 🏔️ Viewpoint5
Akechidaira Ropeway
Akechidaira Ropeway

One of the finest viewpoints in Oku-Nikko — ride the ropeway up to a lookout at 1,473 metres and you'll have Kegon Falls, Lake Chuzenji, and Mount Nantai all in a single frame. It's the best angle for photographing the falls from above, and in autumn it's where the queues get long.

📍Location: at the end of the Daini Irohazaka line · Akechidaira bus stop
⚠️Important note: closed for major refurbishment from Jan 2026 to around Sep 2027 — check the status before you go
🚌Getting there: off at the Akechidaira stop on the Nikko→Chuzenji/Yumoto line
💡Tip: While it's closed, you can still drive or bus to the Akechidaira car park for the view below.
Nikko Attractions →
♨️ ♨️ Onsen6
Yumoto Onsen + Yudaki Falls
Yumoto Onsen & Yudaki Falls

At the end of the bus line is a tiny onsen town on the shore of Lake Yunoko, where the sulphur water is so concentrated it runs cloudy yellow and an egg-like smell hangs over the whole place — pure bliss after a day on your feet. Just below the lake is Yudaki Falls, which spreads down in a wide curtain, beautiful in the autumn-leaf season.

📍Location: on the shore of Lake Yunoko, the far end of the Oku-Nikko route
♨️Day-use soak: many ryokan open their baths to day visitors, around 500–1,500 yen per person
🚌Getting there: Tobu bus to the Yumoto Onsen terminus ~80 min from Nikko
💡Tip: The sulphur water can tarnish silver jewellery — take it off before you bathe.
Japan Onsen Guide →
How to Get There

From Nikko Town Up Into Oku-Nikko

There's no train up to Oku-Nikko — everyone uses the same single bus line. Get these three steps and planning your day is easy (2026 timetables and fares may change, so check at the Tobu counter first).

STEP 1
Get to Nikko Town First

From Tokyo, ride to Tobu-Nikko station (the Tobu train from Asakusa is easiest) or JR Nikko — the two stations sit side by side and both are the starting point for the climb. For the full route into Nikko, see the Nikko city guide.

STEP 2
Take the Tobu Bus Uphill

In front of the station you'll find Tobu buses bound for Chuzenji Onsen or Yumoto Onsen, climbing the Irohazaka winding road. It's about 45 minutes to Kegon Falls / Lake Chuzenji and around 80 minutes to Yumoto. Buses run on a schedule — check the times at the stop.

STEP 3
Buy an Unlimited Bus Pass

If you're hitting several spots in a day, an unlimited-ride pass (for the Chuzenji or Yumoto zone, say) is far better value than paying per ride, because fares climb steeply with distance. Buy it at the Tobu counter in front of the station.

Eat & Drink

What to Eat While Exploring Oku-Nikko

Nikko's signature food is "yuba" (tofu skin) — almost every restaurant has a yuba dish. Up the mountain around Lake Chuzenji and Kegon Falls there are places to stop and refuel between the sights.

🍶
Yuba — the Local Specialty
The thin film skimmed off the surface of boiling soy milk — soft, somewhere between tofu and egg, and Nikko's signature ingredient.
🍜
Yuba Soba
An easy crowd-pleaser — hot soba topped with yuba, just the right amount to fill you mid-sightseeing. Easy to find at the shops around Lake Chuzenji.
🍱
Yuba Rolls / Set Meals
Specialist shops wrap rice and local ingredients in yuba and serve it as a set, or serve it raw (sashimi) so you taste the soft texture for real.
🐟
Grilled Trout by the Lake
The cold mountain water is good for raising trout, and several lakeside shops serve it grilled with salt, hot off the skewer.
☕
Cafés with a Lake View
The Chuzenji Onsen area has cafés where you can sip a coffee looking out over the lake and Mount Nantai — a good rest before moving on.
🛍️
Shops Close Early Up Here
Many places on the mountain close earlier in the afternoon and evening than those in town. Plan your lunch well and keep a snack in your bag.
Map

Oku-Nikko's Highlightson One Map

See clearly how close Kegon Falls, Lake Chuzenji, the Senjogahara marsh, and the Akechidaira Ropeway sit to each other — all linked by the bus from Nikko town that climbs the Irohazaka winding road.

Where to Stay

Stay Up the Mountain or Down in Nikko Town

Oku-Nikko has no big luxury chains, but there are onsen ryokan with a real mountain feel. Pick from three options to match the style of your trip.

1) Lakeside ryokan at Chuzenji Onsen — wake up to a view of the lake and Mount Nantai, close to Kegon Falls, ideal if you want to see the main sights without rushing · 2) Yumoto Onsen — higher and quieter, with cloudy, concentrated sulphur water, ideal for serious soakers and anyone walking Senjogahara · 3) Stay in Nikko town — more rooms and a wider range of prices, then ride the bus up in the morning, ideal if you also want to see the town's shrines. During the October autumn-leaf season every kind of room fills up fast, so booking ahead and picking a free-cancellation rate is the safest move.

🏨 Find a room now: compare prices and availability for ryokan and hotels in Nikko and the onsen up the mountain at Search Nikko stays on Agoda → · for a deeper look at where to stay, see the Nikko accommodation guide
🍁
Autumn Leaves Run Top-Down
Yumoto / Senjogahara turn in early Oct · the lake and Irohazaka mid to late Oct · Nikko town in early Nov.
❄️
Some Spots Close / Snow in Winter
This is high mountain country — winters are bitterly cold and snowy, and some trails or services may close. Check the latest status first.
🧥
Always Cooler Than Town
At 1,200–1,400 m it's several degrees colder than Nikko town — bring a long-sleeved layer even in summer.
🚌
Check the Return Bus Times
Mountain buses aren't as frequent as in town. Note the last bus back so you don't get stranded, especially on a day trip.
♨️
You Can Soak Without Staying
No overnight needed — many Yumoto ryokan open their baths to day visitors for around 500–1,500 yen per person, no reservation required.
📶
Turn On an eSIM, Save Maps Offline
Signal is patchy in spots up the mountain — save your maps and bus times offline, and have an eSIM ready before you head up.
Related Guides

Keep Planning Nikko and Japan's Mountains — Cities, Onsen, and Routes

🏯

Nikko City Guide

The full Nikko guide — the Tosho-gu shrine, where to stay, what to see, and how to get there from Tokyo. Your base before heading up to Oku-Nikko.

Nikko Guide →
🗺️

Nikko Itinerary

Map out a Nikko route covering both the town's shrine district and Oku-Nikko up the mountain, whether you've got one day or an overnight.

Nikko Itinerary →
⛰️

Koyasan

The sacred mountain in Wakayama — sleep in a temple (shukubo), the Okunoin cemetery, and shojin-ryori vegetarian cuisine. Another spiritual mountain to explore.

Koyasan Guide →
🏔️

Kamikochi

The Japan Alps valley in Nagano — Kappa Bridge, Taisho Pond, and the Hotaka range. A paradise for hikers who love mountain views.

Kamikochi Guide →
♨️

Japan Onsen Guide

How to bathe, the etiquette, and what to know about tattoos before you try the sulphur water at Yumoto.

Onsen Guide →
🚅

Japan 7-Day Itinerary

A 7-day route through Japan's main cities, in case you want to slot Nikko and Oku-Nikko into a bigger trip.

7-Day Plan →
Frequently Asked Questions

Questions AboutOku-Nikko

How is Oku-Nikko different from Nikko?
The Nikko most people know is the area of the Tosho-gu shrine and the historic temples down at town level. "Oku-Nikko" means inner Nikko — the high mountain area above the town, reached up the Irohazaka winding road. It covers Kegon Falls, Lake Chuzenji, the Senjogahara marsh, and Yumoto Onsen, and is all about nature, waterfalls, mountain lakes, and hiking rather than historic monuments.
How tall is Kegon Falls, and can you go down to the base?
Kegon Falls is 97 metres tall and ranks among Japan's three most beautiful waterfalls. An old lift dating from 1930 takes you down about 100 metres to a close-up viewing platform at the base. The upper viewpoint is free, while the lift down to the lower platform costs around 570 yen for an adult (2026 prices may change, so check the latest before you go).
How do you get from Nikko town to Oku-Nikko?
Take a Tobu bus from JR Nikko or Tobu-Nikko station heading for Chuzenji Onsen or Yumoto Onsen. It climbs the Irohazaka winding road and reaches Chuzenji Onsen in about 45 minutes (Kegon Falls is roughly a 5-minute walk from the bus stop). An unlimited-ride bus pass is worth it because distances are long and there are many stops — check the latest timetable and fares before you travel.
When is the best time to visit Oku-Nikko?
The autumn-leaf (koyo) season is the most beautiful, and the colour starts at higher elevations first — Yumoto Onsen and Senjogahara in early October, then down to Lake Chuzenji and the Irohazaka road in mid to late October. Summer is cool and pleasant for the marsh walk, while in winter several spots see snow and roads may close, so check the latest weather and road conditions.
Is the Senjogahara marsh hard to walk, and how long does it take?
Senjogahara is a wide, flat wetland at around 1,400 metres, with a raised wooden boardwalk the whole way — easy and not steep, so it suits beginners. The popular stretch from Ryuzu Falls to Akanuma takes about 2 hours; if you walk the longer way to Yudaki Falls / Yumoto Onsen it's about 2.5–3 hours in total. Bring comfortable walking shoes and drinking water.
Where is a good place to stay overnight around Oku-Nikko?
There are onsen ryokan both in the lakeside Chuzenji Onsen area and at the higher Yumoto Onsen, where the cloudy yellow sulphur water is the draw. You can also stay down in Nikko town and ride up in the morning. During the October autumn-leaf season rooms fill up very fast, so book ahead — check the latest options and prices on Agoda and pick a free-cancellation rate first.
Ready to Head Up the Mountain?

See All of Nikko Town
Then Bus Up to Oku-Nikko

Start with the Nikko city guide to plan the shrines and in-town sights, then build on it by heading up the mountain for Kegon Falls, Lake Chuzenji, and Yumoto Onsen — or book a room in Nikko early, especially for the fast-filling October autumn-leaf season.

🏯 Nikko City Guide 🏨 Search Nikko Stays →
🔴 Book Nikko Stays Nikko Guide