“Winter shapes, Moscow river”. Moscow river at this part is never covered by ice. When the temperature is very low it's possible to see a strong fog. Morning light and pipes of the oli factory creates a fantastic landscape. Photo location: Moscow, Russia. (Photo and caption by Sergey Rumyantsev/National Geographic Photo Contest)

Sjinkie Knegt of Netherlands, left, and Park Se-Yeong of South Korea crash out as they compete in a men's 1500m short track speedskating final at the Iceberg Skating Palace during the 2014 Winter Olympics, Monday, February 10, 2014, in Sochi, Russia. (Photo by Bernat Armangue/AP Photo)

A woman applies make-up on a young woman's lips as they both wear bearskin before the start of the second edition of the International Festival of Winter Traditions “Cetatea lui Bucur” in Bucharest, Romania, on December 16, 2023. (Photo by Daniel Mihailescu/AFP Photo)

Kamila Valieva, of the Russian Olympic Committee, reacts after competing in the women's free skate program during the figure skating competition at the 2022 Winter Olympics, Thursday, February 17, 2022, in Beijing. (Photo by David J. Phillip/AP Photo)

German surfer Sebastian Steudtner rides a big wave during a free surfing session at Praia do Norte, in Nazare, Portugal, 05 November 2023. The Nazare surfing spot in Portugal is one of the world's biggest wave spots in winter time. (Photo by Jean-Christophe Bott/EPA)

Karen Chen, of the United States, competes in the women's team free skate program during the figure skating competition at the 2022 Winter Olympics, Monday, February 7, 2022, in Beijing. (Photo by Jeff Roberson/AP Photo)

A 10 km prologue dog sled race on the eve of the 2018 Beringia dog sled race in Russia' s Far East; the prologue race is part of the 2018 Russian Winter Dog Powered Sports Cup in Petropavlovsk-Kamchatsky, Russia on March 4, 2018. (Photo by Yuri Smityuk/TASS)

A youth in costume hurries past a mural after dancing at the Sun Festival in Cotacachi, Ecuador, Sunday, June 24, 2018. Across the Andes, from the tip of Argentina as far north as Colombia, indigenous communities are gathering for the southern hemisphere's winter solstice to honor the ancient sun god. (Photo by Dolores Ochoa/AP Photo)