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%
2%
86%
10%
76
flagAustria
0%
2%
76%
17%
47
flagFrance
0%
8%
72%
16%
25
flagSwitzerland
2%
12%
69%
12%
39
flagGermany
3%
9%
68%
18%
285
flagGreece
2%
4%
68%
24%
45
flagthe United Kingdom
3%
11%
67%
17%
339
flagUnknown
8%
11%
66%
13%
36
flagthe Netherlands
7%
5%
65%
21%
38
flagPoland
3%
11%
64%
19%
28570
flagRepublic of Ireland
0%
9%
64%
26%
42
flagCanada
1%
10%
60%
25%
60
flagthe United States
4%
13%
59%
20%
838
flagUkraine
10%
9%
58%
20%
293
flagIndia
10%
16%
57%
13%
140
flagAustralia
4%
12%
57%
18%
64
flagBelarus
10%
17%
55%
17%
40
flagRussia
5%
12%
48%
30%
224
flagSpain
4%
8%
47%
39%
23
flagthe Philippines
22%
25%
37%
7%
27