Editing Naples (section)

==== Subterranean Naples ====
[[File:Galleria borbonica - War refuge (Naples).jpg|thumb|[[Naples underground geothermal zone|Underground Naples]]]]
{{Main|Beneath Naples|Catacombs of San Gennaro|Catacombs of Saint Gaudiosus|San Pietro ad Aram}}
[[Naples underground geothermal zone|Underneath Naples]] lies a series of caves and structures created by centuries of mining, and the city rests atop a major [[Geothermal activity|geothermal]] zone. There are also several ancient [[Greco-Roman]] reservoirs dug out from the soft [[tuff|tufo stone]] on which, and from which, much of the city is built. Approximately {{convert|1|km|spell=in|abbr=off}} of the many kilometres of tunnels under the city can be visited from the [[Naples underground geothermal zone|Napoli Sotteranea]], situated in the historic centre of the city in [[Via dei Tribunali (Naples)|Via dei Tribunali]]. This system of tunnels and cisterns underlies most of the city and lies approximately {{convert|30|m|ft}} below ground level. During [[World War II]], these tunnels were used as [[air-raid shelter]]s, and there are inscriptions on the walls depicting the suffering endured by the refugees of that era.

There are large [[Catacombs of San Gennaro|catacombs]] in and around the city, and other landmarks such as the [[Piscina Mirabilis]], the main cistern serving the [[Bay of Naples]] during Roman times.

Several archaeological excavations are also present; they revealed in [[San Lorenzo Maggiore, Naples|San Lorenzo Maggiore]] the [[macellum of Naples]], and in [[Santa Chiara, Naples|Santa Chiara]], the biggest thermal complex of the city in Roman times.