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%
82%
14%
146
flagSwitzerland
3%
7%
72%
13%
129
flagGermany
3%
7%
70%
16%
1070
flagAustria
2%
3%
70%
20%
163
flagthe Netherlands
3%
3%
69%
22%
84
flagRepublic of Ireland
0%
6%
68%
25%
72
flagGreece
2%
2%
67%
26%
71
flagthe United Kingdom
3%
10%
66%
18%
571
flagPoland
3%
10%
65%
19%
32419
flagAustralia
4%
11%
64%
16%
98
flagthe United States
4%
12%
61%
19%
1155
flagFrance
4%
9%
61%
21%
42
flagBelarus
7%
12%
59%
20%
105
flagUkraine
10%
9%
56%
19%
730
flagKazakhstan
8%
14%
55%
19%
68
flagSpain
2%
11%
55%
27%
43
flagIndia
11%
16%
54%
14%
205
flagCanada
4%
9%
54%
28%
82
flagRussia
7%
10%
52%
25%
600
flagthe Philippines
18%
18%
42%
13%
38