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Many of the locations listed here are private property, or places local authorities have closed to entry. Entering without permission constitutes trespassing.
This database exists to record these places, not to encourage visiting them. It is not intended to promote danger or illegal activity.
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Tsuruoka City, Yamagata Prefecture (near the former Yudo settlement, along a prefectural road)
Mikozawa Tunnel (Tsuruoka)
Tsuruoka's Mikozawa Tunnel was dug in 1947 as a coal mine road and rebuilt by the city. Its memorial, ghost rumors, and the Old Aburato Tunnel mix-up.
Open — active road tunnel
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