Mount Sukai
 Mount Sukai (皇海山 Sukai-san) is one of the 100 Famous Japanese Mountains. The 2144 m (7034 ft) high peak lies in the Ashio Mountains of Japan on the border of Nikkō in Tochigi Prefecture and Numata in Gunma Prefecture. Mount Sukai is an old stratovolcano but with the whole mountain covered in forest today it does not appear like a typical volcano.