Video documents a sealed lower chamber in a closed section of Derinkuyu

March 16, 2026TürkiyeGeneralShare

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Key facts

• The presenter enters a restricted section through a damaged metal gate and narrow tunnel.
• The video shows what the presenter describes as a large, completely unexcavated hall, with a staircase leading to a sealed doorway and three or four branching tunnels.
• The presenter describes the floor as unlevelled and says some excavated sections are closed because of structural instability, while deeper areas remain sealed.
• Sand and sediment are visible behind a rolling stone door; the presenter argues that the material must have been carried in from the far side of the sealed doorway.
• The presenter says only about 15% of Derinkuyu Underground City is officially accessible.
• Derinkuyu was discovered in 1963 when a renovation broke through a wall in a house basement; it extends more than 85 metres below ground across 18 levels and is estimated to have accommodated up to 20,000 people.
• The Greek Orthodox Church of the Sacred Apostles is in the town of Derinkuyu and dates to the 10th–11th centuries.

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