Katla volcano alert level has been raised to Yellow on July 28, 2017.
This after the strongest earthquake in years and a sulfur smell emanating from river coming out of the volcano were reported in the area.
Katla is located beneath the MÝRDALSJÖKULL GLACIER in Iceland. An eruption in Katla is believed to pose even greater dangers to aviation than the 2010 eruption in nearby Eyjafjallajökull glacier.
