Running beneath the Italian city of Naples and the surrounding area is an underground geothermal zone and several tunnels dug during the ages. This geothermal area is present generally from Mount Vesuvius beneath a wide area including Pompei, Herculaneum, and from the volcanic area of Campi Flegrei beneath Naples and over to Pozzuoli and the coastal Baia area. Mining and various infrastructure projects during several millennia have formed extensive caves and underground structures in the zone. Over millennia, extreme geothermal pressure has helped form a strong, durable tuffaceous volcanic sandstone called tuff, a rock composed of compressed and compacted volcanic ash ejected during a volcanic eruption. The entire Naples area is a geothermal region with deep veins of the tuff sandstone, generically referred to as "yellow tuff". It runs in deep veins beneath Naples and the area around it in strata which are found at different depths. More information...
According to PR-model, napolisotterranea.org is ranked 2,845,826th in multilingual Wikipedia, in particular this website is ranked 64,725th in Dutch Wikipedia.
The website is placed before lubuskie24.pl and after syg.com in the BestRef global ranking of the most important sources of Wikipedia.
