Camelback Mountain Resort is a ski and snowboard resort located in the Tannersville, Pennsylvania in the Pocono Mountains. Opened in December 1963, Camelback is the largest ski resort in the Poconos. In the 1950s, when developers were working to expand the original solitary ski run, they negotiated with the then Pennsylvania Department of Environmental Resources for permission to use a small portion of the state park for the ski area in exchange for $1 a year and the obligation to maintain the entire park. Camelback Mountain reaches an elevation of 2,133 feet (650 m). There are 166 acres (67 hectares) of skiing & snowboarding terrain. The resort has a total of 35 slopes; the longest is the Nile Mile, at .88 miles. It features a vertical drop of 800 ft (244 m), two terrain parks, 15 lifts, including 2 high speed detachable chairlifts; the Sullivan Express and Stevenson Express, both quads. The mountain summit receives an average of 50 in (127 cm) of snowfall each winter. It has snowmaking facilities on ski slopes, primarily relying on portable snow guns to create snow, and is 100% lit for night skiing. In May 2015 Camelback opened Camelback Resort and Indoor Waterpark. Additional attractions was added with Camelback Mountain Adventures, which features multiple ziplines. Camelback Mountain Resort is from Pinemere Camp, and about north of Allentown, Pennsylvania. Camelback has invested in their educational ski and snowboard programs. The resort uses the marketing phrase: "Learn Here, Learn Right". Camelback Resort and Indoor Waterpark Camelback Resort and Indoor Waterpark was opened in 2015. Their waterpark, known as Aquatopia, was voted the #1 Indoor Waterpark in the country by USA Today for 2015. The indoor park is open year-round while the outdoor park is open only in the summer. Aquatopia includes over 37 waterslides (the most in Pennsylvania), including four body slides, a mat slide, five tube slides and four raft rides, in addition to a wave pool, lazy river, a children's play area, and a full-sized competition pool. Aquatopia also features the FlowRider, a wave riding pool for surfing and boogie boarding. Camelback Mountain Adventures Camelback Mountain Adventures offers Treetop Adventure courses, of zipline, ZipFlyer, Mountain Segways, Disc Golf, and a 4500' Mountain Coaster. Within Camelback Mountain Adventures, they also offer Adventure Zone activities of Climbing Wall, EuroBungee, and a Freefall Airbag Jump. Soon to be added to Camelback Mountain Adventures is an Alpine Slide.