In which major European city, there is a volcano that may soon erupt?

in Porto
in Heraklion
in Naples
in Palermo
Lying mostly underwater, Campi Flegrei comprises 24 craters. It is one of the largest volcanoes in the world, capable of producing VEI 7 (super-colossal) eruptions. Its most recent eruption of 1538 created a new hill, Monte Nuovo.
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Very interesting!
reach: rather globalcitiescities of Europecities of ItalydisastersEuropegeographygeography of ItalyItalynatural disastersvolcanoes

Answers by country

in Porto
in Heraklion
in Naples
in Palermo
answers
flagItaly
0%
1%
84%
12%
125
flagthe Netherlands
4%
2%
72%
20%
68
flagSwitzerland
3%
8%
71%
13%
92
flagAustria
2%
3%
70%
20%
120
flagGreece
3%
3%
69%
23%
63
flagRepublic of Ireland
0%
7%
68%
23%
64
flagGermany
3%
8%
67%
18%
738
flagthe United Kingdom
3%
10%
66%
18%
510
flagUnknown
8%
11%
66%
13%
36
flagPoland
3%
10%
65%
19%
31387
flagBelarus
7%
11%
65%
14%
76
flagFrance
2%
11%
65%
17%
35
flagAustralia
3%
12%
62%
16%
89
flagthe United States
4%
12%
59%
21%
1042
flagUkraine
10%
9%
57%
20%
580
flagCanada
5%
9%
55%
27%
74
flagRussia
7%
10%
54%
25%
462
flagIndia
11%
16%
54%
13%
183
flagKazakhstan
13%
5%
51%
27%
37
flagSpain
2%
11%
48%
34%
35