Old Sun Glacier is located in the U.S. state of Montana
in Glacier National Park
. The glacier is situated immediately to the east and northeast of the Mount Merritt
at an elevation between 9,400 feet (2,900 m) and 8,600 feet (2,600 m) above sea level. The glacier was named after a sun priest of the Blackfoot called "Ntas", translated to Old Sun. Old Sun Glacier has numerous crevasses and appears to have a healthy accumulation zone. Old Sun Glacier lost 12 percent of its surface area between 1966 and 2005.
Type: Mountain Glacier
Area: Approximately 91 acres (0.37 sq km)
Length: 0.30 mi (0.48 km)