It has been said that the valley was dammed by lava from the eruption of Mt. Nantai about 20,000 years ago, and the original shape was created. Located at an altitude of 1,269 meters above sea level, it is at one of the highest heights in Japan. From the idyllic lakeside at the foot of Mt. Nantai, you can enjoy the seasonal changes. Especially, the seasons of azaleas in early summer and autumn leaves are wonderful. In addition, it is also popular that “Kurinso/Japanese primrose" with beautiful pink, white, and red petals in Senjugahama get full bloom around June every year. The mysterious landscape attracts many people.
It is good to walk around the lake but it is also recommended to take a sightseeing boat and enjoy the scenery from the water. In the season of autumn leaves, the "Autumn Leaves Tour" course is also operated.
There are many large hotels and inns around the lake, and this makes it convenient for accommodations. In addition, there are many attractive good spots for sightseeing that represent Oku-Nikko, such as Nikko Futarasan Shrine Chugushi, Tachiki Kannon, Kegon Falls, Ryuzu Falls, and Senjogahara.
Highlights
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It is a lake located at the highest altitude in Japan, and the weather is relatively cool even in summer.
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In autumn, a magnificent view of the autumn leaves is seen.
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During the autumn leaves season, the "Autumn Leaves Tour" course by a sightseeing boat is also operated irregularly.
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Campgrounds and rental boats are provided, and it is also recommended for enjoying outdoor leisure.