This is what happens if you're not careful and drag your skis through water while crossing a creek which looks frozen but it isn't, although it is totally covered with fresh snow: in seconds snow will stick to the bottom of your skis and is almost impossible to get rid of, especially if you're skiing off-piste, in remote areas and temperatures are way below 0. Forget about exhilarating descents for the rest of the day unless you're patient enough to scrape every bit of ice away...