To perform efficient slope maintenance by temporarily arranging a movable building on a slope of a skiing ground, and operating an artificial snowfall machine in the air-conditioned inside.
A pair of rails 20 are laid on the slope 10. Of two gantry frames, at least one is movably placed on the rails 20. Freely expandable- contractible bellows type or roller type roofs 70 and 90 and side walls 80 and 100 are arranged between the two gantry frames, and the movable building 30 is temporarily arranged. A counterweight type driving carriage 120 is arranged for towing the movable building 30 along the rails 20. An air conditioning duct for air conditioning is arranged in the movable building 30, and is connected to cooling equipment 50. The snowfall machine 160 operating in the movable building 30 is provided.
MATSUNAGA TAKEFUMI