Today (26-July-2021) at 16:35 UTC an earthquake with magnitude of Mw3,0 took place in Ljósufjöll volcano. Earlier earthquake with magnitude of Mw2,2 also took place at 15:44 UTC.
In this area there is also a fault zone that is between Langjökull and Snæfellsnes. That fault zone normally doesn’t have many earthquakes. With only activity happening every few decades and sometimes even less frequency. The area where the earthquake activity is inside the volcano named Ljósufjöll. Earthquake activity in this area started in May-2021. Currently its too early to know if this means anything, since this might just be earthquake activity and nothing more might happen, even if this earthquake activity is happening in a volcano.