Katla has been showing signs of unrest since 1999 , and geologists have concerns that it might erupt in the near future . Particularly , monitoring has been intensified following the March 2010 eruptions of a smaller neighbouring volcano , the Eyjafjallajökull glacier . The eruption of this nearby long-dormant volcano in March and April 2010 prompted fears among some geophysicists that it might trigger an eruption at the larger and more dangerous Katla . In the past 1,000 years , all three known eruptions of Eyjafjallajökull have triggered subsequent Katla eruptions
2010 eruptions
2010 eruptions of Eyjafjallajökull
Katla (volcano)