Lake Haruna is a caldera lake. It lies near the summit of Mount Haruna, within the city limits of Takasaki, Gunma Prefecture, Japan. A former name for the lake is Lake Ikaho.

Takasaki Station is a major junction railway station located in the city of Takasaki, Gunma, Japan, operated by the East Japan Railway Company and the private railway operator Jōshin Dentetsu. It is a