Skiing And Snowboarding In US National Forests Ski resorts began springing up across the country in the 1910s and 1920s. According to the National Ski Areas Association (NSAA), by 1930 five ski resorts operated from California to Massachusetts. The next decade saw fifty resorts open, including Sun Valley, Alta, and Stowe. Over the next three decades, the ski industry exploded, 82 resorts opened from 1940-1960, with […] Industry News Claire Weiss | May 11, 2017 0 Comments