GPS station had measured 72.5cm of uplift since January 2011. Future hazards While Campi Flegrei has seen more unrest lately, an eruption in the area is unlikely to happen in the near future. Though a large-scale eruption like the one that occurred 39,000 years ago is very unlikely, a new caldera-forming eruption in the area is a possibility. Considering the unrest seen at the port of Pozzuoli, it is probable that the next eruption will take place within that region of the caldera. Geoheritage designation In respect of its 18th and 19th century role in the development of geoscience, not least volcanology, this locality was included by the International Union of Geological Sciences (IUGS) in its assemblage of 100 'geological heritage sites' around the world in a listing published in October 2022. Wine Italian wine, both red and white, under the Campi Flegrei DOC appellation comes from this area. Grapes destined for DOC production must be harvested up to a maximum yield of 12 tonnes/hectare for red grape varieties, and 13 tonnes/ha for white grape varieties. The finished wines need to be fermented to a minimum alcohol level of 11.5% for reds and 10.5% for whites. While most Campi Flegrei wines are blends, varietal wines can be made from individual varieties, provided the variety used comprises at least 90% of the blend and the wine is fermented to at least 12% alcohol for reds and 11% for whites. Red Campi Flegrei is a blend of 50–70% Piedirosso, 10–30% Aglianico and/or Sciascinoso and up to 10% of other local (both red and white) grape varieties. The whites are composed of 50–70% Falanghina, 10–30% Biancolella and/or Coda di Volpe, with up to 30% of other local white grape varieties. Cultural importance Campi Flegrei has had strategic and cultural importance. The area was known to the ancient Greeks, who had a colony nearby at Cumae, the seat of the Cumaean Sibyl. The beach of Miliscola, in Bacoli, was the Roman military academy headquarters. Lake Avernus was believed to be the entrance to the underworld, and is portrayed as such in the Aeneid of Virgil. During the civil war between Octavian and Antony, Agrippa tried to turn the lake into a military port, the Portus Julius. Baiae, now lying underwater, was a fashionable coastal resort and was the site of summer villas of Julius Caesar, Nero, and Hadrian (who died there). In Pozzuoli is