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%
92%
6%
50
flagSwitzerland
0%
13%
77%
9%
22
flagGreece
0%
6%
76%
16%
30
flagAustria
0%
0%
76%
14%
21
flagthe United Kingdom
4%
11%
67%
16%
267
flagGermany
4%
6%
66%
20%
102
flagUnknown
8%
11%
66%
13%
36
flagTurkey
8%
0%
66%
25%
12
flagPoland
3%
11%
64%
20%
26162
flagCanada
0%
10%
63%
24%
49
flagthe Netherlands
9%
9%
63%
18%
22
flagBelarus
13%
13%
60%
13%
23
flagthe United States
4%
13%
59%
20%
729
flagRepublic of Ireland
0%
18%
59%
22%
22
flagIndia
10%
13%
58%
16%
105
flagAustralia
4%
16%
58%
14%
48
flagUkraine
9%
8%
54%
24%
150
flagRussia
4%
10%
53%
29%
120
flagSpain
5%
11%
47%
35%
17
flagthe Philippines
20%
28%
40%
4%
25