Scientists in Iceland say there are strong signs that volcanic eruptions may occur near Mount Keilir following several days of tremors.
The volcano is located 12 kilometres from Keplavik International Airport and about 30 kilometres south of the capital, Reykjavik.
Víðir Reynisson of the island’s civil defence force said it was “more likely than not” that an eruption would occur – the first in the area since the 12th century.
The eruption poses no immediate danger to the island.