This photo of aurora borealis was taken on Kulusuk, a small island on the east coast of Greenland. In Greenland, the northern lights are most visible on a dark, clear night from September to the beginning of April. They are present all year but cannot be seen during the summer months because of the shining midnight sun. Inuit legend says that when the northern lights “dance in the night sky, it means that the dead are playing football with a walrus skull.”