Mount Etna has been showing unusual activity signs as world leaders meet.
Mr Trump and the other G7 leaders are staying and meeting in the small town of Taormina, on the east coast of Sicily, off Italy, which is used to seeing lava flows and ash spews from one of the world's deadliest volcanoes.
And the huge volcano, which is currently erupting and on a red alert, is experiencing some of its most unusual behaviour which has promoted fears a major eruption could happen at any time.
So could it actually happen?
According to www.volcanodiscovery.com, which tracks activity at volcanoes across the globe, the peak is behaving unusually.
Powerful images as Mount Etna continues to erupt Mon, March 20, 2017
Powerful images as Italy's largest active volcano erupts in a fiery show of lava
Play slideshow IPA/WENN.com 1 of 18
View of lava flows from Trecastagni, Zafferana, Giarre, Fornazzo as Mount Etna continues to erupt; the flows that start from the south east crater pour into the Valle del Bove
The website said: "Since 11 May, Etna has been in an unusual state of activity.
"At remarkably regular intervals of approximately eight hours, the 'saddle vent', located between Etna's old and new southeast crater, has been producing more than 20 brief episodes of mild strombolian activity, each accompanied by a short-lived increase in volcanic tremor amplitude."
Volcano researcher Researcher Dr Marco Neri said: "These small eruptive events are always accompanied by an increase in the amplitude of volcanic tremor, which corresponds to a vibration produced by movements of volcanic fluids circulating within the eruptive duct.
"When the magma approaches the surface and erupts, tremor increases sharply… therefore, the tremor graph shows a series of almost regular peaks for amplitude and intervals. It's like volcano's hiccups."
Since 11 May, Etna has been in an unusual state of activity. "At remarkably regular intervals of approximately eight hours, the 'saddle vent', located between Etna's old and new southeast crater, has been producing more than 20 brief episodes of mild st
Get Quotes on Home Insurance
But the volcano has almost continuously erupted since records started in the 1950s.
Between 1966 and 1971 it was continuous for five years.
The current eruptions started in 2014, the second longest continuous period since the 1950s.
Boris Behncke, the Italian National Institute of Geophysics, told Newsweek: "We’ve had quite a bit of activity between January and the end of April."
In March, a BBC crew was hit by scolding rocks and steam after boiling lava combined with snow.
Mr Behncke said: "It is considered by most of the people here a sort of Sicilian lady, a little bit mysterious and also sometimes quite undecided.
The largest and most terrifying volcanoes around the world Tue, May 16, 2017 Play slideshow Getty 1 of 11
In 2010 at least 78 were killed as Mount Merapi erupted in Indonesia
“There might be some small-scale activity but that would not affect Taormina at all.
“Very, very, very few people have been killed by eruptions of Mount Etna.”
The last big eruption was in 1992.
There was heightened activity from 1991 to 1993, with the main explosion on May 23 1992.