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Hekla and Katla: Rearranging Iceland over the Centuries

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  There have been about thirty volcanoes active in Iceland since the Norse settlers arrived.  The island was created only twenty million years ago. It stands on the Mid-Atlantic Ridge, a chain of mostly underwater mountains created by volcanic activity as the European and North American continental plates rip apart from each other. In Iceland, the volcanoes reach the surface, where they simmer, bubble and occasionally explode. Let me introduce you to some of them. We have already met Snaefellsjökull , the prettiest of them all with its almost perfect cone and its topping of ice, that hovers above Snaefellsnes. It is taking a nap at the moment - the last time it erupted was about AD 200. Hekla: Iceland's busiest volcano We have also met the most active, Hekla. This is sited just to the north of Eyjafjallajökull, and can be clearly seen from sixty miles away. It is nearly classically volcano-shaped - a cone with hunched shoulders - but the summit is actually a line of craters covered