Working on surfaces of snow or ice in order to make them suitable for traffic or sporting purposes, e.g. by compacting snow for sporting purposes, e.g. preparation of ski trails; {Construction of artificial surfacings for snow or ice sports ; Trails specially adapted for on-the-snow vehicles}, e.g. devices adapted for ski-trails
Working on surfaces of snow or ice in order to make them suitable for traffic or sporting purposes, e.g. by compacting snow for sporting purposes, e.g. preparation of ski trails; {Construction of artificial surfacings for snow or ice sports ; Trails specially adapted for on-the-snow vehicles}, e.g. devices adapted for ski-trails