The landing circuit is to be flown south of the landing field. Make sure all landings and traffic on the ice occur parallel to the runway headings. If it is possible to land outside the marked runway, make sure that the ice surface is efficiently utilized. If the runway has to be cleared of snow, only the marked runway will be available. In that case active participation of the ground crew is required. If there is a mismatch between the number of gliders in use and available ground crew, limitations will be imposed on the gliding activity.