In Alaska, the colorful, dancing lights of the aurora borealis shine their brightest http://on.natgeo.com/2ALB6Lu pic.twitter.com/Qis2BaNqN6

In Alaska, the colorful, dancing lights of the aurora borealis shine their brightest http://on.natgeo.com/2ALB6Lu  http://pic.twitter.com/Qis2BaNqN6

https://twitter.com/NatGeoTravel/status/931295829159165952