Bunkui-tōge Pass, Mountain pass in Ina City, Japan.
Bunkui-tōge Pass is a mountain pass in Nagano Prefecture that connects different sections of Route 152 through elevated terrain. The road crosses through the ridge between valleys, allowing travel across the separated regions on either side.
The pass became an important part of the Akiha Kaido road system, linking communities across the Nagano region for generations. This historic route allowed travelers and traders to cross the mountains and connect communities on both sides.
The pass sits directly above the Median Tectonic Line, a major geological fault that runs through Japan. You can experience this unusual location while walking across the ridge, even though the geological forces remain hidden beneath your feet.
From mid-April to mid-November, a shuttle bus service operates to carry visitors across the pass. Free parking is available for about 100 vehicles, making it easy to leave your car during your visit.
The location shows unusual magnetic properties that draw researchers for geophysical studies. This magnetic oddity makes it a rare site in Japan where scientists conduct field observations and measurements.
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