Lava fountains are pictured at the site of a fissure eruption near Iceland's Bardarbunga volcano September 2, 2014. A fissure eruption near Iceland's Bardarbunga volcano was still spouting lava on Monday but no ash, a day after an eruption that briefly caused the country to raise its ash alert level for aviation to its highest level. Iceland's largest volcanic system - 190 km long and up to 25 km wide (118 miles by 15.5 miles) - has been hit by thousands of earthquakes over the last two weeks, putting scientists have been on high alert. REUTERS/Armann Hoskuldsson (ICELAND - Tags: ENVIRONMENT DISASTER)