Italy has been on alert ever since two new craters opened on the summit of the volcanic island of Stromboli, just north of Sicily, earlier this week.
One of the new lava streams formed as a result has already started flowing into the sea.
The lava sent up vast plumes of steam as it plunged into the Mediterranean.
As one of Europe's active volcanoes, Stromboli belches smoke and flaming lava daily.
The last major eruption in 2002 caused a collapse that led to a small tidal wave and forced the closure of the island to visitors for months.
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