How deep is it? (below Nevşehir)
over 110 meters deep
How old is it? (Derinkuyu)
not given
How deep is it? (Derinkuyu)
over 60 meters deep
How many people could live there? (Derinkuyu)
> 20,000 people
Who discovered it? (below Nevşehir)
construction workers
How old is it? (below Nevşehir)
up to 5,000 years old
What might be the purpose of the city? (Derinkuyu)
to protect the city's residents