WATCH: Ancient Mystery Tunnel Unearthed Near Jerusalem

Part of an ancient tunnel found near Jerusalem. (Credit: Yoli Schwartz / Israel Antiquities Authority) (Credit: Yoli Schwartz / Israel Antiquities Authority)

A 50-meter rock-hewn tunnel discovered near Jerusalem during pre-construction excavations has baffled archaeologists, who cannot yet determine its age, purpose, or whether it was ever completed.

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