1,600-Year-Old Hidden Tunnel Network Under Hagia Sophia Could Strech Up to 9 KM Long @greekreporter
1,600-Year-Old Hidden Tunnel Network Under Hagia Sophia Could Strech Up to 9 KM Long  @greekreporter
Uploaded September 2026 | Updated September 2026, 3 hours ago
GreekReporter.com - Restoration work beneath Istanbul’s Hagia Sophia could give visitors access to parts of an underground network stretching possibly up to 9 kilometers (about 5.6 miles), Turkey’s culture and tourism minister has said. Crews are clearing passages that remain partly blocked by mud, rubble and collapsed sections.

Full story: greekreporter.com/2026/09/18/hagia-sophia-tunnels

Speaking to reporters in Kahramanmaras on Thursday, September 17, Mehmet Nuri Ersoy described an extensive system of galleries and tunnels beneath the monument. Its full reach remains uncertain as some passages are still inaccessible.

Video by Ministry of Culture and Tourism of Turkey

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1,600-Year-Old Hidden Tunnel Network Under Hagia Sophia Could Strech Up to 9 KM Long
GreekReporter |

1,600-Year-Old Hidden Tunnel Network Under Hagia Sophia Could Strech Up to 9 KM Long

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