Mount Etna is not a island. It is a volcano.
Sicily
Mount Etna
Mt Etna is a volcano, which can be found on the Italian island of Sicily.
mount etna in Sicily is an example of a volcano
mainland
Mount Etna, an active volcano on the island of Sicily, is 3329 metres, or 10,922 feet high.
Italy, Sicily
Mount Etna
it is in the city of Catania on the island of Sicily, Italy
For the volcano Mount Etna and connections with the mafia.
Mount Etna
There may be several. But the most well known Etna is a Volcano on Sicily, an island off the coast of Italy.