Sylvan Pass (Wyoming)
8,524 feet (2,598 m)) is a mountain pass located in the Absaroka Range in Yellowstone National Park in Wyoming.In the 2007–08 season it cost the parks service in excess of $200,000 to keep it open and avalanche control measures were put in place.The original road through the pass was designed by Captain Hiram Chittenden of the Army Corps of Engineers.Sylvan Lake has a subarctic climate (Köppen Dfc), characterized by long, cold winters and short summers.The weather station, Yellowstone NP East ENT, is situated roughly halfway between the summit of Sylvan Pass and Pahaska Tepee, at an elevation of 6954 feet (2120 m).