On Friday 22-July-2017 and on Saturday 23-July-2017 earthquake swarm activity took place inside Katla volcano caldera. Largest earthquake on Friday 22-July was magnitude 3,1 and on Saturday a magnitude 3,2 earthquake took place. Before and after the main earthquakes a swarm of smaller earthquakes took place.
Interesting earthquake activity has been appearing in the south-west part of the caldera. That area had a minor eruption in 1999 (lasted for ~6 hours maybe). This is directly above Sólheimajökul glacier (tourist attraction). Currently Katla volcano is quiet but that can change without warning given recent history of earthquake activity in the volcano.
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