Posts Tagged ‘tonkararin’

Delving into the Depths of Japan’s Mysterious Tonkararin Tunnels

Within the sloping mountains of Japan lies a mysterious ruined tunnel structure known as the Tonkararin Tunnels. This ancient ruin likely dates to the 5th or 6th century of Imperial Japan, although its true age remains unknown. Archaeologists, scientists, and locals constantly argue about why this tunnel system was built. Some academics theorize it was it built […]

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