During the last few hours there has been ongoing earthquake swarm in Öræfajökull volcano. This earthquake swarm started around 29-June-2018 in the south side of Öræfajökull volcano. At the moment the earthquake activity seems to be close or directly under Road 1 in Iceland.
The earthquake activity in Öræfajökull volcano on 3-July-2018. Copyright of this image belongs to Icelandic Met Office.
This change in earthquake activity is interesting and is in my view a sign of trouble to come. There are not any older eruption vents in the side of Öræfajökull volcano, but such vents might have been wiped out by glacier over the centuries. There is a good reason to continue to monitor this earthquake activity in Öræfajökull volcano.