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%
147
flagSwitzerland
3%
7%
72%
13%
133
flagGermany
2%
7%
70%
16%
1118
flagAustria
2%
3%
70%
20%
167
flagthe Netherlands
3%
3%
69%
21%
89
flagthe United Kingdom
3%
10%
67%
18%
599
flagRepublic of Ireland
0%
6%
67%
26%
73
flagGreece
2%
2%
67%
26%
71
flagPoland
3%
10%
65%
19%
32587
flagAustralia
3%
10%
65%
15%
102
flagFrance
4%
8%
63%
19%
47
flagthe United States
4%
12%
61%
19%
1189
flagBelarus
9%
12%
58%
19%
110
flagUkraine
10%
9%
56%
19%
736
flagCanada
4%
9%
56%
27%
85
flagIndia
11%
16%
55%
13%
209
flagKazakhstan
10%
14%
55%
18%
69
flagSpain
2%
11%
55%
27%
43
flagRussia
7%
10%
53%
25%
614
flagthe Philippines
18%
18%
42%
13%
38