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Nikko NP, Tochigi
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The 97m main curtain has company: the “Twelve Falls” seep from the surrounding lava cliff. In January and February, these thin side streams can freeze blue, edging the central cascade with ice.
A 6.4m dam quietly helps run this natural spectacle: it controls Lake Chuzenji’s outlet, whose released water becomes Kegon Falls. Tochigi manages releases to maintain flow at the falls and river functions downstream.
Every spring, Asian house martins return to breed around Kegon Falls, looping above the gorge. A Nikko Natural Science Museum naturalist once watched a peregrine falcon sweep past and send the flock climbing skyward.
Since 1930, a lift has carried visitors 100m through solid rock to a viewing deck near the plunge pool; the ride takes about 1 minute. It is now the third elevator, but still displays an emblem from the first.
Kegon’s cliff is still changing: erosion is slowly pushing the falls upstream, and old plunge-pool scars remain downstream. A major rockfall in 1986 prompted careful reinforcement of the cliff top.
The national Scenic Beauty designation does not stop at the waterfall: granted in 1931, it covers about 166 hectares, including parts of Lake Chuzenji’s shore, Ueno Island and Shirakumo Falls.
Tochigi’s official account credits Buddhist monk Shōdō Shōnin with discovering Kegon Falls and says its name comes from a Buddhist sutra. The cascade’s story is part of Nikko’s religious landscape, not geology alone.
