Mount Ontake (御嶽山, Ontake-san), also referred to as Mount Kiso Ontake (木曽御嶽山, Kiso Ontake-san), is the second highest volcano in Japan at 3,067 m (10,062 ft) located around 100 km (62 mi) northeast of Nagoya. It is on the borders of Kiso and Ōtaki, Nagano Prefecture, and Gero, Gifu Prefecture. It should not be confused with Mount Mitake, a mountain in Tokyo written with the same characters, and various other Japanese mountains which share the name Ontake. Thought to be inactive until 1979, it underwent a series of eruptions over the following year, but has not erupted since 1980. The volcano has five crater lakes, with Ni no Ike (二ノ池) at 2,905 m (9,531 ft) being the highest mountain lake in Japan.
Elevation: 3,067 m (10,062 ft)