When it comes to frost, large fans can be used, the air stream being injected into water that turns into a snow. This allows skiers to go skiing. The same thing is used on slalom slopes. The thicker snow layer will withstand death and the tracks and slopes will remain useful for a long spring,
Hello everybody. It is fine that You will see my pictures. I do not know English very well. Therefore, it may be some comments or answers seem strange. I'm trying to learn more. Thank you for your understanding.