Saana Mountain in Kilpisjärvi, Northern Finland.

The show starts late in the evening, observed from frozen Lake Kilpisjärvi.

In the small village of Kilpisjärvi.

Near Skibotn, Norway, by day ...

... and by night.

Beautiful mountain scenery during the day ...

... getting spectacular at night.

Near the Norwegian-Finnish border.

Grøtsundet with Tromsø city lights in the back ...

... and now turning around.

Oldervik after sunset ...

... and at night.

Remember, northern lights are dynamic.

These images have been taken within 2 minutes, each exposed for 20 sec.