In the Turkish province of Nevsehir, a man hit the wall of his basement with a hammer during renovations and discovered something incredible behind it.

Metro.co.uk writes about the find.

The man, who chose to remain anonymous in the reports, discovered the tunnel hidden behind a wall during a small renovation in his own home.

The tunnel led to another, and behind it another.

In the end, he managed to accidentally find the entrance to a huge underground city called Derinkuyu.

The underground fortress remained abandoned and neglected for many centuries, but later it was found that it has a depth of 18 floors and can accommodate up to 20 thousand inhabitants.

There were temples, schools and even stalls.

According to archaeologists of the Department of Culture of Turkey, Derinkuyu was carved out of volcanic rock.

The city became a kind of man-made anthill.

Experts believe that it was created by the Phrygians between the 7th and 8th centuries BC.

This is an ancient Indo-European culture.

It will be recalled that archaeologists discovered a

burial containing the remains of a shield and several graves during preliminary works for the construction of a house in Oslo.

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