An Aurora Borealis (Northern Lights) is seen over a mountain camp north of the Arctic Circle, near the village of Mestervik late September 30, 2014. REUTERS/Yannis Behrakis (NORWAY - Tags: ENVIRONMENT TRAVEL SOCIETY TPX IMAGES OF THE DAY)

The Aurora Borealis (Northern Lights) is seen over a mountain camp north of the Arctic Circle, near the village of Mestervik early October 2, 2014. REUTERS/Yannis Behrakis

A commercial jetliner flies under the Aurora Borealis (Northern Lights) over a mountain camp north of the Arctic Circle, near the village of Mestervik early October 2, 2014. REUTERS/Yannis Behrakis

The Aurora Borealis (Northern Lights) is seen over the Bals-Fiord near the village of Mestervik, north of the Arctic Circle, early October 2, 2014. REUTERS/Yannis Behrakis

An Aurora Borealis (Northern Lights) is seen over a mountain camp north of the Arctic Circle, near the village of Mestervik early October 1, 2014. REUTERS/Yannis Behrakis

The Aurora Borealis (Northern Lights) is seen over a mountain camp north of the Arctic Circle, near the village of Mestervik late October 1, 2014. REUTERS/Yannis Behrakis

A tourist takes photos of an Aurora Borealis (Northern Lights) over the Bals-Fiord north of the Arctic Circle, near the village of Mestervik late September 30, 2014. REUTERS/Yannis Behrakis

A tourist looks over on the island of Sommaroy north of the Arctic Circle, in Norway's Troms region September 30, 2014. REUTERS/Yannis Behrakis

Vehicles drive by as a display of Aurora Borealis (Northern Lights) is seen north of the Arctic Circle, over the village of Mestervik in northern Norway September 30, 2014. REUTERS/Yannis Behrakis

A road cuts through a forest during a rainy day on the island of Senja, north of the Arctic Circle in Norway September 29, 2014. REUTERS/Yannis Behrakis

A man casts his fishing line in Bals-Fiord, north of the Arctic Circle, near the village of Mestervik in northern Norway September 30, 2014. REUTERS/Yannis Behrakis

Cormorants rest on poles in Bals-Fiord, north of the Arctic Circle, near the village of Mestervik in northern Norway September 30, 2014. REUTERS/Yannis Behrakis

A tourist takes photos of lake Nikkavatnet, north of the Arctic Circle, near the village of Mestervik in northern Norway September 28, 2014. REUTERS/Yannis Behrakis

An Aurora Borealis (Northern Lights) is seen at the Bals-Fiord north of the Arctic Circle, near the village of Mestervik late September 30, 2014. REUTERS/Yannis Behrakis

General view of a small harbor and snow-capped mountains in Bals-Fiord, north of the Arctic Circle, near the village of Mestervik in northern Norway September 30, 2014. REUTERS/Yannis Behrakis

A tourist takes photos of an Aurora Borealis display (Northern Lights) over the Bals-Fiord north of the Arctic Circle, near the village of Mestervik late September 30, 2014. REUTERS/Yannis Behrakis

A general view of lake Nikkavatnet, north of the Arctic Circle, near the village of Mestervik in northern Norway September 28, 2014. REUTERS/Yannis Behrakis

An Aurora Borealis (Northern Lights) is seen over a mountain camp north of the Arctic Circle, near the village of Mestervik late September 30, 2014. REUTERS/Yannis Behrakis

Tourists return to a small harbor after spending the day fishing in North-Fiord, north of the Arctic Circle, near the village of Mestervik in northern Norway September 28, 2014. REUTERS/Yannis Behrakis