These scientists are flying over Iceland's Bardarbunga volcano, checking the surface.<br/> <br />They're collecting data after a small eruption occurred under the icecap of this huge glacier, the Dynjujokull.<br/> <br />The volcano warning level has been raised to red, the highest, and the area's already been evacuated.<br/> <br />Deep underground a sharp increase in volcanic activity has been recorded over recent days.<br/> <br />It's a reason for concern after ash from an eruption of another Icelandic volcano in 2010 shut down much of Europe's airspace for six days. Ten million travellers were affected.<br/> <br />It's uncertain that the eruption will stay below the glacier so these scientists are closely examining seismic activity.<br/> <br />There's a significant risk that this eruption could also emit ash clouds.<br/> <br />If that happens flights could be rerouted or even grounded and with the holiday season in full swing, that's not good news for travellers.
