<p>The Daily Telegraph said the ash is spreading towards Britain in a giant crescent, with the horns pointing south, which will approach the eastern edge of Ireland and enter northern Russia by late Monday.<br /><br />Officials in France warned that flights would be cancelled if the cloud reaches Europe.<br />Grimsvoetn, Iceland's most active volcano at the heart of its biggest glacier, began erupting late Saturday, sending a plume of smoke and ash 12 miles high. So much ash was blasted into the sky that it blocked out the sun and covered nearby villages and farms.<br /><br />By Sunday, the ash had reached the capital Reykjavik, nearly 250 miles to the west, and all the country's airspace was closing down.<br /><br />In April last year, 34 countries shut their airspace after the Eyjafjallajökull volcano erupted due to fears that fine ash particles could cause jet engines to stall.<br /><br />It was the largest such closure since the Second World War and millions of passengers were affected.<br /><br />Experts and aviation authorities said the impact of the Grimsvoetn eruption should not be as severe and was likely to mainly affect Iceland.<br /><br />However, they acknowledged that changing weather patterns could sweep the ash into areas where it would affect other countries.<br /><br />Grimsvoetn, which has erupted nine times between 1922 and 2004, is located in an enormous caldera - a collapsed volcanic crater - five miles in diameter near the centre of the Vatnajoekull icefield, the Telegraph said.</p>
<p>The Daily Telegraph said the ash is spreading towards Britain in a giant crescent, with the horns pointing south, which will approach the eastern edge of Ireland and enter northern Russia by late Monday.<br /><br />Officials in France warned that flights would be cancelled if the cloud reaches Europe.<br />Grimsvoetn, Iceland's most active volcano at the heart of its biggest glacier, began erupting late Saturday, sending a plume of smoke and ash 12 miles high. So much ash was blasted into the sky that it blocked out the sun and covered nearby villages and farms.<br /><br />By Sunday, the ash had reached the capital Reykjavik, nearly 250 miles to the west, and all the country's airspace was closing down.<br /><br />In April last year, 34 countries shut their airspace after the Eyjafjallajökull volcano erupted due to fears that fine ash particles could cause jet engines to stall.<br /><br />It was the largest such closure since the Second World War and millions of passengers were affected.<br /><br />Experts and aviation authorities said the impact of the Grimsvoetn eruption should not be as severe and was likely to mainly affect Iceland.<br /><br />However, they acknowledged that changing weather patterns could sweep the ash into areas where it would affect other countries.<br /><br />Grimsvoetn, which has erupted nine times between 1922 and 2004, is located in an enormous caldera - a collapsed volcanic crater - five miles in diameter near the centre of the Vatnajoekull icefield, the Telegraph said.</p>