Below the Naples of today is hidden a cave labyrinth of 80km. The caves are up to 40m below the street level and have been created by the digging of the yellow tuff which has been used for the houses above. The caves are partly in use since the 4th century BC.
The Greeks built cisterns in which the water from rain was guided so the inhabitants could use it as water supply wells.
During world war II, the population sought shelter in the caves from air raids.
Over the years, many of the underground caves have been filled with garbage and debris and are not accessible anymore. Also, a way to handle a problem with rubbish…
Since the city always suffered from a shortage of space the houses were built on top of each other. Researchers were sure there must be a theater from Greek/Roman times. About five years ago their search was successful. In the cellar of a small “basso”, they found the remains of old walls.
A small part could be cleared from debris and made accessible.
The remaining rest is covered by the many storeys of the houses above.