The last time it went off back in 2011 it created ash clouds - causing the cancellation of around 900 flights. Scientists last week recorded 'seismic activity' - meaning magma is swelling and could bring unwanted movement. The Icelandic Met Office said raising the threat level did not automatically mean it was about to blow again. (Image: Getty Images)Grímsvötn could rise further up the four-level scale if more seismic activity is detected by experts. Thankfully, it is less powering than the Eyjafjallajökull volcano, which erupted in 2010 and caused 100,000 flights to be cancelled.

Source: Daily Mirror October 11, 2020 22:23 UTC