Photographs supplied from Wikimedia Commons. Cropped and encoded locally.

snow-tracks.webp, snow-tracks-720.webp
Source page: https://commons.wikimedia.org/wiki/File:Cross-country_skiing_with_clear_sky.jpg
Creator: Martin Eklund
License: CC0 (http://creativecommons.org/publicdomain/zero/1.0/deed.en)
Original candidate: outfitter-8c4deaec.jpg
Crop: {"left":900,"top":0,"width":1020,"height":1280}

snowshoe-steps.webp, snowshoe-steps-720.webp
Source page: https://commons.wikimedia.org/wiki/File:Cross_Country_Skiing_(Unsplash).jpg
Creator: Alec Moore alecmmoore
License: CC0 (http://creativecommons.org/publicdomain/zero/1.0/deed.en)
Original candidate: outfitter-a23daf75.jpg
Crop: {"left":350,"top":690,"width":1200,"height":580}