Iceland's Grimsvotn volcano is being investigated from far and wide. The Edinburgh-based, British Geological Survey, appealed to members of the public to send in what they considered to be samples of ash. A scanning electron microscope revealed that this pollen-sized particle (above) submitted by Kirkwall Grammar School, Orkney, had come from the volcano to a part of Britain that's relatively close to its source. Read more on these volcanic particles.
Scottish Islands Explorer - has a wider circulation than this volcanic ash
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