There is a plow guy that eventually shows up in his pickup truck after a big snow storm.
As he clears the parking area and driveway, all of the now is pushed into these huge mounds which provide endless possibilities for the boys:
. a new road for the tractors and trucks
. an elevated point which is the perfect height for free falling into the fresh (not packed) snow
The largest mound near the barn, approximately 6-7 ft. high and 15 ft long, was turned into a "ski slope" for sleds. The "Buttermilk" was the longest hill with a gentle incline. The "Expressway" was short and steep... you get the idea :)