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Samurai era

Sanada Tunnel

A hole in the grounds of Sanko Shrine, said to have led to Osaka Castle.

The grounds contain what is said to be the entrance to a secret tunnel. Stories say Sanada Nobushige used it to come and go from Osaka Castle, but this has not been confirmed as historical fact.

History & legend

  • Legend

    Legend says Sanada Nobushige traveled between Osaka Castle and Sanada-maru through this tunnel.

  • Fact

    It has not been confirmed that the tunnel actually connected to Osaka Castle.

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