fluffydelusions
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Iceland has issued a red alert to the aviation industry for the Bardarbunga volcano, meaning significant ash emissions are likely.
The Icelandic Met Office has warned that a small sub-glacial eruption is under way at Bardarbunga.
On Wednesday, authorities evacuated an area close to the volcano over fears it could erupt.
Iceland's Eyjafjallajokull volcano erupted in 2010, producing an ash cloud that severely disrupted air travel.
The red alert is the highest warning on the country's five-point scale.
Bardarbunga is part of a large volcano system hidden beneath the 500-metre (0.31-mile) thick Vatnajokull glacier in central Iceland.
Authorities have previously warned that any eruption in the volcano, which sits under an ice cap, could result in flooding of the area north of the glacier.
Wednesday's evacuation of several hundred people from the area came after geologists said about 300 earthquakes had been detected in the area since midnight on Tuesday.
The region, located more than 300km (190 miles) from the capital Reykjavik, has no permanent residents but sits within a national park popular with tourists.
The Eyjafjallajokull eruption in April 2010 caused the largest closure of European airspace since World War Two, with losses estimated at between 1.5bn and 2.5bn euros (£1.3-2.2bn).
Criticism following the strictly enforced shutdown resulted in the UK's Civil Aviation Authority relaxing its rules to allow planes to fly in areas with a low density of volcanic ash.
http://www.bbc.com/news/world-europe-28913165