Sophia's Tunnels Explored

Archaeologists have removed about 3,000 tons of debris from roughly 1,600-year-old Roman tunnels beneath Istanbul’s Hagia Sophia, uncovering passages that had been buried. Excavation, underway since February 2025, has cleared nearly 558 feet of a route once used to carry rainwater toward the sea and connected to a fifth-century Roman street. Researchers hope to open more of the underground network to visitors and present its archaeological remains in an exhibition.

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