Another Eyjafjallajokull? Airlines on alert as Iceland's largest volcano threatens to erupt and create chaos for air travellers Intense earthquake swarm detected under the Bardarbunga volcano Icelandic Meteorological Office raised aviation alert to second-highest level Geologists warn the Icelandic volcano is close to erupting Eyjafjallajokull volcano erupted in 2010, causing massive disruptions Read more: http://www.dailymail.co.uk/travel/travel_news/article-2728782/Another-Eyjafjallajokull-Airlines-aler...