 Deer Valley has been a popular skiing location since the 1930s and was improved by the Works Progress Administration (WPA) who built many of its first ski trails and other facilities during the winter of 1936–1937.In 1946 local citizens built the first ski lifts, and the area became known as "Snow Park".In 1981 a private resort officially opened in the same area as "Deer Valley" and has grown to include six mountains with six bowls, of glade skiing and of snow-making.