Nantai-san (Mount Nantai)

Nantai-san (Mount Nantai)

Page Type Page Type: Mountain/Rock
Location Lat/Lon: 36.76694°N / 139.48792°E
Activities Activities: Hiking
Seasons Season: Summer
Additional Information Elevation: 8150 ft / 2484 m
Sign the Climber's Log


Nantai-san, also known as Mount Nantai, is a prominent extinct stratovolcano on the shore of Lake Chuzenji-ko in Nikko National Park. The peak is sacred and is also known as Futara-san. The middle shrine of Futara-san sits at the foot of Nantai-san, and is where the standard route up the mountain starts. On the summit sits the upper shrine of Futara-san. (The lower Futara-san shrine sits in the city of Nikko and is part of the UNESCO world heritage site).

From locations around Lake Chuzenji-ko, Nantai-san appears as a pretty almost perfect cone. Great views can be had at the summit, of Lake Chuzenji-ko, and the peaks of Nikko National Parks. Lava flows from the early stage of the construction of Nantai volcano dammed up the Daiyo River, forming Chuzenji-ko. The dramatic Kegon waterfall plunges over this barrier and is the top attraction in Nikko National Park.

Getting There

Nantai-san is within the confines of Nikko National Park, the oldest national park in Japan. From the city of Nikko, take the Tobu buses bound for Yumoto from the central bus station that is just beside the Tobu Rail Station. Alight in front of the Futara-san shrine by Lake Chuzenji-ko. The bus journey takes about 1hr.

The most convenient way to get to Nikko from Tokyo is to catch the Tobu trains going out of Asakusa station. A good deal is to get an "All Nikko Pass" (4400 yen) that allows you a return trip from Nikko and unlimited local bus travel at Nikko over a four-day period, including buses going to Yumoto.

Red Tape

The Futara-san shrine owns the mountain. You have to pay 500 yen at the shrine for the privilege of climbing the mountain.

When to Climb

The official climbing season for Mount Nantai starts on the 5th of May and ends on the 25th of October. Early in the season, snow still covers the upper reaches of the mountain and snowshoes may be needed. By mid-June, the snow should be gone and it's just a normal hike up.

Normal Route Description

The normal route to summit Mount Nantai starts from the Futara-san shrine by Lake Chuzenji-ko. This is a popular route and sees quite a bit of traffic. There is an elevation gain of about 1200m from the shrine to the summit. 3-4 hrs is the estimated time of the climb for a hiker of average fitness.

The climb starts with a flight of stone stairs from the shrine. The path then continues up along well-marked trails amidst trees up till the 3rd station. A tar road switchbacking up the mountainside leads up to the 4th station. From the 6th station to the 8th, there is scrambling up rocks, but the path is always well marked. Above the 8th station the gradient lessens. The last 100m are on loose red volcanic soil.

There are small shelters at the 5th, 7th, and 8th station that I assume people can camp in if they so wish.

External Links

Nikko City Tourism Association - Mt. Nantai Page

Blog page of a guy who climbed Mount Nantai in early may

Account of a 2-day summit of Mt. Nantai from same blogger as above