What is "populonia"

Populonia or Populonia Alta ( Etruscan: Pupluna, Pufluna or Fufluna, all pronounced Fufluna; Latin: Populonium, Populonia, or Populonii) today is a frazione of the comune of Piombino ( Tuscany, central Italy). As of 2009 its population was 17. Populonia is especially noteworthy for its Etruscan remains, including one of the main necropolis in Italy, discovered by Isidoro Falchi.