| Lake Haruna | |
|---|---|
_-_B11_-_The_Fuji_of_Haruna.jpg) The Fuji of Haruna Adolfo Farsari | |
  Lake Haruna | |
| Location | Takasaki, Gunma |
| Coordinates | 36°28′30″N 138°52′0″E / 36.47500°N 138.86667°E |
| Type | caldera |
| Basin countries | Japan |
| Surface area | 1.15 km2 (0.44 sq mi) |
| Max. depth | 12.6 m (41 ft) |
| Shore length1 | 6 km (3.7 mi) |
| Surface elevation | 1,084 m (3,556 ft) |
| 1 Shore length is not a well-defined measure. | |
Lake Haruna (榛名湖, Haruna-ko) 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 (伊香保沼, Ikaho-numa).
In the summer, the lake is a popular destination for campers. The surface freezes in the winter, and it affords skating and ice fishing for wakasagi.
The lake lies a 90-minute bus ride from Takasaki Station. It can be reached in 40 minutes by car from Shibukawa-Ikaho Interchange, #12 on the Kan-Etsu Expressway. The road to the lake is one of 10 musical roads located in Gunma prefecture alone; the song played is "Sweetly Sings the Donkey," chosen because the melody is known as "At a Quiet Lakeside" in Japan.
A kayōkyoku refers to the lake in its title. Akira Fuse recorded the tune, named Haruna-ko no shōjo. The music is by Rei Nakanishi and the lyrics by Ken'ichirō Morioka.
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.