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%
145
flagEstonia
0%
5%
75%
19%
36
flagSwitzerland
2%
7%
72%
14%
122
flagGermany
3%
7%
70%
16%
1053
flagAustria
2%
3%
70%
20%
162
flagGreece
2%
2%
69%
25%
68
flagthe Netherlands
3%
3%
68%
22%
83
flagRepublic of Ireland
0%
6%
68%
25%
72
flagthe United Kingdom
3%
10%
66%
18%
568
flagPoland
3%
10%
65%
19%
32342
flagAustralia
4%
11%
64%
15%
97
flagthe United States
4%
12%
61%
19%
1146
flagBelarus
7%
11%
60%
20%
97
flagFrance
4%
9%
60%
21%
41
flagUkraine
10%
9%
56%
19%
721
flagKazakhstan
8%
14%
55%
19%
68
flagSpain
2%
11%
55%
27%
43
flagIndia
11%
16%
54%
14%
204
flagCanada
4%
9%
54%
28%
82
flagRussia
7%
10%
52%
25%
590