Cross-country skiing - Wikipedia
https://en.wikipedia.org/wiki/Cross-country_skiingThe word ski comes from the Old Norse word skíð which means stick of wood. Skiing started as a technique for traveling cross-country over snow on skis, starting almost five millennia ago with beginnings in Scandinavia. It may have been practised as early as 600 BCE in Daxing'anling, in what is now China. Early historical evidence includes Procopius's (around CE 550) description of Sami p…