Tags: Glacier.
Piegan Glacier is in Glacier National Park in the U.S. state of Montana. The glacier is situated in a cirque on the southeast slope of Piegan Mountain and just below the summit at an elevation between 8800 and 8200 ft (2700 and 2500 m) above sea level. The glacier covered an area of approximately 62 acres (0.25 km2) in 2005 a 10 percent reduction in its surface area since 1966.