Snow grooming

Snow grooming is the process of manipulating snow for recreational uses with a tractor, snowmobile, piste caterpillar, truck or snowcat towing specialized equipment. The process is used to maintain ski hills, cross-country ski trails and snowmobile trails by grooming (moving, flattening, rototilling, or compacting) the snow on them. A snow groomer is usually employed to pack snow and improve skiing and snowboarding and snowmobile trail conditions. The resulting pattern on the snow is known as corduroy,[1] and is widely regarded as a good surface on which to ski or ride. Snow groomers can also move accumulated snow made by snow machines as part of a process, called "snow farming".

A snow groomer with plow, a surface finishing attachment for ski slopes, and a cable winch for grooming steep slopes
A groomed cross-country trail, showing corduroy for skate-skiing and classic tracks (left)
A groomed alpine skiing piste or trail