ROME - Italy says another European volcano that could erupt is Ischia, the popular tourist island off the coast of Naples.

Ischia's thermal waters are popular with visitors seeking relief from aches and pains.

Guido Bertolaso, who heads Italy's civil protection agency, told journalists in Rome on Tuesday that, while Vesuvius is commonly thought of as the Italian volcano that could erupt, it's Ischia, which last erupted some 700 years ago, that is experiencing a buildup of magna.

But he said scientists don't see any immediate risk of eruption.

He said Italian experts are concerned about a dozen undersea volcanoes in the Mediterranean near Sicily. He said a five-year-study is being launched, with attention to the volcanos' potential to launch tsunamis.