An immense subterranean vault was found beneath the Citadel in Cairo on 7/6/2007, said the Minister of Culture Farouq Hosni.

The vault dates back to the era of King Al-Nasser Mohamed Ben Qalawun in the 8th century of Hejira, said the Minister.

The vault extends along 200 meters between Al-Ablaq Palace and the sideline palaces of the Citadel.