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%
86%
11%
117
flagSwitzerland
3%
8%
73%
10%
84
flagthe Netherlands
4%
3%
71%
20%
64
flagGreece
3%
3%
70%
22%
61
flagAustria
2%
3%
68%
21%
108
flagGermany
3%
9%
67%
17%
643
flagthe United Kingdom
2%
10%
67%
17%
478
flagRepublic of Ireland
0%
8%
67%
24%
61
flagUnknown
8%
11%
66%
13%
36
flagBelarus
8%
10%
65%
15%
73
flagFrance
2%
11%
65%
17%
35
flagPoland
3%
10%
64%
19%
31046
flagAustralia
3%
12%
62%
16%
86
flagthe United States
4%
12%
59%
21%
1018
flagUkraine
10%
9%
57%
20%
552
flagIndia
11%
17%
56%
13%
176
flagCanada
4%
8%
56%
28%
71
flagRussia
6%
9%
55%
25%
408
flagKazakhstan
15%
6%
53%
25%
32
flagSpain
2%
11%
48%
34%
35