An aerial picture taken on September 14, 2014 shows the Bardarbunga volcano spewing lava and smoke in southeast Iceland. The Bardarbunga volcano system has been rocked by hundreds of tremors daily since mid-August, prompting fears the volcano could explode. Bardarbunga, at 2,000 metres (6,500 feet), is Iceland's second-highest peak and is located under Europe's largest glacier, Vatnajoekull. AFP PHOTO / BERNARD MERIC (Photo credit should read BERNARD MERIC/AFP/Getty Images)
