It lies near the summit of Mount Haruna, within the city limits of Takasaki, Gunma Prefecture, Japan.

The surface freezes in the winter, and it affords skating and ice fishing for wakasagi.

It can be reached in 40 minutes by car from Shibukawa-Ikaho Interchange, #12 on the Kan-Etsu Expressway.

Akira Fuse recorded the tune, named Haruna-ko no shōjo.

Parts of the anime and manga Initial D take place on or around the lake, under the fictional name Lake Akina, as Mount Haruna - named Akina (秋名) in the series - is the location of the tōge where Takumi, the protagonist, wins his first races.