"The first part of the video is a timelapse animation of the aurora borealis, often referred to as the 'Northern Lights', above the volcano.http://www.telegraph.co.uk/news/worldnews/europe/iceland/11099223/Icelands-Bardarbunga-volcano-erupts-under-Northern-Lights.html
The second part shows a close-up view of lava fountains filmed from a helicopter approximately 1km from the crater."