Seismic sequence at Eyjafjarðaráll. The map shows the earthquakes which occurred 19-20 September 2012 as white dots, 20-21 October as red dots and 22-23 October as green dots (only M>2). The M5.6 event is marked as a black star. The blue circle shows the area of the cluster that was detected in the morning of 22 October. Tectonic faults are shown as black lines.