Guide
Kenun Pass is a high-altitude mountain pass situated at 1,823m, marking the boundary between Takayama Village in Nagano Prefecture and Tsumagoi Village in Gunma Prefecture. True to its name—which implies a place where even the wind feels empty—the landscape is characterized by a stark, desolate beauty with very few tall trees. This unique environment is a direct result of the area's history of sulfur mining. Visitors can still see the remnants of the industrial era, such as the steel towers of the former ropeway (cableway) used to transport materials from the Ogushi Mine, creating a striking fusion of natural scenery and industrial ruins.
The region has a deep history of sulfur mining dating back to the Meiji and Taisho eras. The local vegetation was significantly altered by the historical practice of clearing trees for smelting and the impact of sulfur dioxide gas released during the process. The area also holds a somber history, having experienced a major landslide disaster in 1937. In recent years, the pass has gained modern fame as a popular filming location for movies (such as 'Fly Me to the Moon' / 'Tonde Saitama') and music videos by popular artists like LiSA and back number, thanks to its cinematic and atmospheric scenery.
The most iconic sight is the line of steel towers from the old mining ropeway standing against the desolate landscape. This sight creates a powerful, almost otherworldly atmosphere. The signpost marking the border between Gunma and Nagano is also a popular photo spot due to the unique vibe of the location. For hikers, the area offers well-maintained trails leading to peaks such as Hafugadake, Kenun-yama, and Gohan-dake. On clear days, you can enjoy a breathtaking panoramic view of the surrounding mountain ranges.
The best time to visit is from June to September, when the changing flora and seasonal colors are most visible. While summer is ideal for hiking and trekking, please be aware that weather conditions at this high altitude can change rapidly. Fog is common, so it is highly recommended to plan your visit for a clear, sunny day to ensure the best visibility. Note that the Manza Road is closed during the winter season (mid-November to mid-May), making the pass inaccessible by car during these months.
Visitors can enjoy nature walks, hiking, and trekking. Exploring the area while observing the industrial ruins provides a one-of-a-kind experience that blends history with nature. For photography enthusiasts, the dramatic, cinematic landscapes provide a perfect backdrop for artistic shots. However, because the area is subject to volcanic activity and rapid weather shifts, it is essential to monitor local conditions before your trip.
The pass is located near volcanic zones like the Kusatsu-Shirane volcano. It is situated within the scenic natural environments of Takayama and Tsumagoi, making it an excellent destination for a combination of driving and mountain trekking. You can access the area from the Nagano side via Suzaka or from the Gunma side via Kusatsu.