Agatsuma Gorge, Canyon in Gunma Prefecture, Japan
Agatsuma Gorge is a roughly two-kilometer valley cut by the Agatsuma River into volcanic rock, forming sheer walls about 50 meters tall. The flowing water creates a dramatic setting that draws hikers and photographers throughout the year.
The gorge remained remote until 1895, when the first road was built and opened the area to travelers. A railway line was later added, greatly improving access and bringing more visitors to the region.
The name comes from an ancient local prince, and the gorge has long held meaning as a natural treasure for the region. Today, it draws visitors seeking to witness the transformation of the valley during the changing seasons.
The gorge is best reached via JR Iwashima Station, where you can begin exploring the area. During autumn leaf season, shuttle buses run to Roadside Station Agatsumakyo, making this the most popular time to visit.
Near Byobuiwa Rock sits the Tarusawa Tunnel, a remarkable railway passage measuring only 7.2 meters long. It holds the record as Japan's shortest railway tunnel and is easy to miss if you are not paying close attention.
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