Sensors picked up a 3.8 magnitude earthquake earlier today.
Ten to 15 aftershocks followed the quake.
This activity follows the unusually large earthquakes at Katla just two days ago.
Bárðarbunga, which is located beneath in Vatnajökull, Iceland’s most extensive glacier, caused the 2014-2015 Holuhraun eruption. It lies about 135 km (81 miles) north of Katla.
Thanks to Arl for this link