The aviation industry has been warned about possible flight disruptions after seismic tremors were recorded at Iceland's largest volcano system.
The country's Met Office has raised the risk level to the aviation industry to orange, warning "heightened or escalating unrest with increased potential of eruption".
As evidence of magma movement shallower than 10 km implies increased potential of a volcanic eruption, the Bárðarbunga aviation color code has been changed to orange.
Presently there are no signs of eruption, but it cannot be excluded that the current activity will result in an explosive subglacial eruption, leading to an outburst flood (jökulhlaup) and ash emission.
More top news
An inventor who built a submarine has told police that a missing journalist died onboard in an accident, and that he buried her at sea.
Want to see the moon appear to take a "bite" out of the sun? Here's some tips on how to do it without damaging your eyes.
Rugby star Matt Dawson has revealed how he required heart surgery after developing Lyme disease from a tick bite.