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Vieux tunnel Amagi
Le vieux tunnel Amagi est le premier tunnel au Japon construit entièrement en pierre, de l'arche aux flancs.
C'est aussi le plus long tunnel en pierre du Japon. En 2001, il fut désigné bien culturel protégé, une première pour un tunnel routier.
Ce tunnel vieux de 100 ans garde sa forme originale et nous donne à voir toute la dextérité des artisans de l'ère Meiji.