but some are. All other classifications are generally not groomed. Sometimes slopes are marked on piste maps as dotted or as dashed lines, this also signifies that the slope is not groomed.

Alpine slope classification in Europe is less rigidly tied to slope angle than in North America. A lower angle slope may be classified as more difficult than a steeper slope if it requires better skiing ability because, for example, it is narrower, requires carrying speed through flatter sections or controlling speed through sharp hairpin turns, or