The
volcano of the Solfatara was formed about four thousand years ago and therefore
slightly later than the formation of the crater at Agnano, while the crater in
the area of the Astroni was still being formed. The Roman historian and
geographer, Strabone,
in
his “Geographia”, mentioned the subject calling them “Forum Vulcani”.
Inside
the Solfatara- G.Hoefnagel – XV1 century