World's largest city dates back to 5k years

The subterranean settlement was discovered in the Nevsehir province of Turkey's Central Anatolia region, in the historical area of Cappadocia, the Independent reported.

Hasan Unver, the mayor of the city on those outskirts the discovery was found, said other underground cities were nothing more than a "kitchen" compared to the newly uncovered settlement.

The town of Nevsehir , on whose outskirts the new underground city was discovered Derinkuyu, believed to date to the 8th century BC, was most recently inhabited by Christians until 1923 when they were expelled during a population exchange with Greece.

The agency has already spent 90 million Turkish liras on the development project, but the organisation's head said that he did not see the money spent as a loss due to the magnitude of the historical discovery.