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Mount Sukai

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皇海山

A 2,144-meter ancient stratovolcano on the 100 Famous Mountains list, offering a challenging hike through the Ashio Mountains.

Mount Sukai
Two yossy at Japanese Wikipedia CC BY-SA 3.0 resized via Wikimedia Commons

What it is

  • The main peak of the Ashio Mountains standing at 2,144 meters elevation.
  • An ancient stratovolcano listed as one of Japan's 100 Famous Mountains.
  • A high-difficulty peak bordering Nikko City and Numata City.
  • A mountain formerly known as Mount Kogai adjacent to Mount Koshin.

What to see

  • The summit offering views from the highest point in the Ashio range.
  • The Koshin Mountain Hut located near the neighboring Koshin summit.
  • A hot spring facility available for hikers at the Ginzandaira trailhead.

Getting there

  • Traditional climbing routes begin from Ginzandaira in Tochigi Prefecture.
  • Access via the Kuriharagawa Forest Road has been closed since 2019.

Notes written by Japan Gems from facts in Japanese Wikipedia.

Where it is

Mount Sukai Open in Google Maps

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