A breathtaking spot representing Gunma Prefecture, boasting a stunning contrast between the mystical "Shima Blue" lake and the surrounding verdant mountains.
Scenic Views
Highlights
The mystical "Shima Blue" lake surface
The beautiful contrast with the surrounding green mountains
Especially vibrant blue from April to May, during snowmelt
Dazzling reflection of sunlight on the lake's surface on sunny mornings
Stunning contrast of vibrant autumn foliage and the tranquil lake during the fall season
Car: Approximately 1 hour and 30 minutes from the Shibukawa-Ikaho IC on the Kan-etsu Expressway.
Bus: Approximately 50 minutes by Kan-etsu Kotsu bus bound for Shima Onsen from JR Agatsuma Line Nakanojo Station. Show route
Op.Hours
8:30 AM to 5:15 PM
Cld.Days
None
Fee
Free
INFO
The lakeside is well-equipped with parking, restrooms, and rest areas.
The surrounding area boasts a variety of onsen (hot springs), restaurants, and accommodations.
Reservations are required in advance for water activities.
Okushima Lake is an artificial lake located in Nakanojo-machi, Agatsuma District, Gunma Prefecture, created by the Shima River Dam. The 4km circumference lake is known for its mystical blue water, "Shima Blue," captivating many visitors with its beauty.
Shima Blue is a result of the lake's high water clarity and the reflection of light. Its appearance varies depending on the season, weather, and time of day. It's particularly vibrant from April to May when snowmelt flows into the lake. On sunny mornings, the sunlight reflecting on the lake's surface creates an even more dazzling and magical view.
The lake is one-way, allowing for a scenic drive around its perimeter. Well-maintained facilities include a babbling brook park and observation decks. The babbling brook park features a lakeside walking path perfect for a nature stroll. The observation decks offer panoramic views of Okushima Lake's grandeur.
Okushima Lake also offers various water activities such as canoeing and stand-up paddleboarding (SUP). Enjoy the freedom of gliding across the lake's surface, surrounded by the rich nature of water and greenery. The cool breezes make it an ideal summer retreat.
Furthermore, Okushima Lake is famous for its autumn foliage. From mid-October to early November, the surrounding mountains burst into vibrant reds and yellows, creating a stunning contrast with the lake's blue surface. The sight is breathtakingly beautiful.
Okushima Lake is a recommended tourist spot for those seeking to reconnect with nature and refresh their minds.