Pal Hermansen / Skating area labyrinth surrounded by snow, aerial view. Akershus, Norway. December 2017.

Pal Hermansen / Aerial shot of an ice skating arena, Lake Langen, Akershus, Norway, December 2017.

Sven Zacek / Cross-country skiier on a moonlit night admiring the Northern Lights (Aurora borealis), Norway, March 2013.

Ole Jorgen Liodden / Boy on skis going up slope, framed by snow laden tree, Norway, February 2014.

Markus Varesvuo / White-tailed Eagle (Haliaeetus albicilla) landing on snowy rock, Norway, November

Christophe Courteau / Tourists and guide using snowshoes on an ecotourism trekking holiday, Svalbard, Norway, June, 2012. Model released.

Kirkendall-Spring / Snowboarders below Table Mountain in the Mount Baker Wilderness, Washington, USA. March 2013.

Kirkendall-Spring / Snowboarder descending Table Mountain in the Heather Meadows Recreation Area, Washington, USA. March 2013.

Espen Bergersen / Aerial shot of a fishing boat with net full of Atlantic herring (Clupea harengus), with two Humpback whales (Megaptera novaeanglae) and a kayaker nearby, Skjervoy, Troms, Norway, November.

David Pattyn / Off piste skier on a steep slope, Chamonix area, Haute-Savoie, Mont Blanc area, France, February

David Pattyn / Off piste skier on a steep slope, Chamonix area, Haute-Savoie, Mont Blanc area, France, February

Pal Hermansen / Ski tracks across a field, aerial view. Akershus, Norway. November 2017.