There have been hundreds of small warning earthquakes that indicate movement in the Earth’s crust.
Residents of a small Icelandic town near a volcano expected to erupt have been given just five minutes to return home to collect valuables.
Grindavik was evacuated on Saturday, with experts warning that recent seismic activity indicated an eruption was imminent.
A number of sheep were also rescued.
“You’re confused when you walk in,” Solveig Thorbergsdottir said.
“You only have five minutes, but I extended it to 15 minutes and just saved what I saw around me. Pictures of the grandchildren. Pictures of me when I was young. My best clothes, my wedding dress.”
Residents were accompanied by police officers there to ensure they did not stay for too long.
“No one has complained so far,” said Olafur Úrvar Olafsson, the police officer in charge.
“I would understand if they weren’t happy, but that’s the way it is today.”
The Icelandic Meteorological Office said police decided to evacuate Grindavik after monitoring indicated that a corridor of magma, or semi-molten rock, now extended beneath the community. The town, with a population of 3,400, is located on the Reykjanes Peninsula, about 50 kilometers southwest of the capital, Reykjavik.
The Met Office said: “At this stage, it is not possible to determine exactly if and where magma may reach the surface.”
Authorities also raised the aviation alert to orange, indicating an increased risk of a volcanic eruption. Volcanic eruptions pose a serious risk to aviation because they can spew highly abrasive ash into the atmosphere, where it can stall jet engines, damage flight control systems and reduce visibility.
A major eruption in Iceland in 2010 caused widespread disruption to air travel between Europe and North America, costing airlines an estimated $3 billion, as they canceled more than 100,000 flights.
The evacuation comes after hundreds of small earthquakes shook the region every day for more than two weeks, as scientists monitor the accumulation of magma at a depth of about 5 kilometers underground.
Concerns about a possible eruption grew in the early hours of Thursday when a 4.8-magnitude earthquake struck the area, forcing the world-famous Blue Lagoon geothermal resort to temporarily close.
Geology professor Pall Einarsson told Icelandic RUV that the seismic activity began in the northern Grindavik area where there is a network of 2,000-year-old craters. He said the magma corridor is about 10 kilometers long and spreading.
“The biggest earthquakes originated there, under this ancient series of craters, but since then (the magma corridor) has become longer, going under the urban area of Grindavik and heading further out to sea,” he said.
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