camps located in the Poconos include Goose Pond Scout Reservation (Lake Ariel), Resica Falls Scout Reservation (Marshalls Creek), and Trexler Scout Reservation (Jonas). The Poconos are also home to several Jewish summer camps, including Camp Massad, Camp Ramah, and Pinemere Camp. Other non-denominational season summer camps include Camp Lohikan, Camp Watonka, and Pocono Springs Camp. Racing Pocono Raceway, a major automobile race track, is home to a NASCAR Cup Series race, the Pocono 400, in July. The track formerly hosted a second NASCAR Cup Series race, the Pocono 325, and an IndyCar race, the Pocono 500. It also serves as a racing school, motorcycle track, and hosts club events. The two NASCAR weekends at Pocono are vital to the region for the tourism money it brings to the local economy. Pocono Raceway is the closest major professional race track to Philadelphia and the major metropolitan areas of New York and New Jersey. Skiing Skiing was a $230 million a year industry in the Poconos and in 1987 accounted for one-quarter of the region's tourist business. Pennsylvania native John Guresh, an employee at Big Boulder Ski Resort, is credited for bringing the ski industry to the Poconos. In the winter of 1956–57 he invented a machine "resembling a lawn sprinkler atop a sled" to generate artificial snow. Joyce Gemperlein of The Philadelphia Inquirer wrote, "Until Guresh perfected snowmaking at Big Boulder, skiing in the Poconos was a relatively minor sport." Ski resorts in the region could not rely on natural snow and, according to Big Boulder manager Ken Knize, there were times when conditions were right for skiing only two weeks a year. Cal Conniff, president of the National Ski Areas Association, regarded Guresh as "one of the pioneers" of the U.S. ski industry. Alpine Mountain - now closed. Blue Mountain Resort — one of the most popular ski resorts in Pennsylvania with 39 trails, 13 lifts and of elevation gain. Camelback Mountain Resort — The second-highest number of ski runs in the Poconos and one of the more popular ski areas and peaks over . Jack Frost Mountain and Big Boulder — Both resorts are owned by the same parent company. Jack Frost caters to more traditional family skiing, while Big Boulder is largely focused on terrain park skiing and snowboarding. Montage Mountain Ski Resort — formerly known as "Snö Mountain". Shawnee Mountain Ski Area — closest to New York