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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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Akita City, Akita Prefecture, near Senshu Park (exact address withheld)
Senshu Tunnel (Akita City)
Senshu Tunnel runs beneath Hachimanyama, part of Kubota Castle's grounds in Akita City. We trace its 1978 opening, its rumors, and how they spread.
Open — public road
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