Was This Hidden Tunnel Used by the Knights Templar?

Smithsonian Channel Pick of the Week

English - March 20, 2017 16:00 - 1 minute - ★★★★ - 31 ratings
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It's unclear if the Knights Templar created the secret tunnel in Acre, Israel, as an escape route or a way to secretly export valuable items. One thing is certain: It's a remarkable showcase of their engineering.