However, the melting has been accelerated since the 1850s, largely as a consequence of human activities.
Some icebergs, evidence of recent calving, can be seen floating in Muir Inlet.
This photograph taken from the same location on August 11, 2005.
Muir Glacier is no longer visible, as it has retreated more than 50 kilometers (31 miles).
During the interval between photographs, Muir Glacier ceased to have a tidewater terminus.
Note the lack of floating ice and the abundant vegetation on many slopes throughout the photograph.
The ice thickness in the center of the photographs is more than 0.7 kilometers.
Photograph taken from the same location on August 31, 2004.
Photograph taken on September 6, 2003, from the same location.
The hillside in the foreground is covered with dense vegetation, including both conifers and deciduous trees.
The head of Queen Inlet has been filled by sediment.
Another view of the Pedersen Glacier from the mid-1920s and the early 1940s.
The second photograph dates from August 10, 2005.
Pedersen Glaciers terminus has retreated more than 2 kilometers (1.24 miles).
The tributary located high above Pedersen Glacier separated from it sometime during the third quarter of the 20th century.
No icebergs are visible.
Isolated patches of snow are present at a few higher elevation locations.
Dense, diverse vegetation, featuring spruce, has become established on the hill slopes.
Northwestern Glacier spans most of the width of the photograph.
The second photograph dates from August 12, 2005.
Lamplugh Glacier
This photograph of Lamplugh Glacier was taken on August 1941.
This photograph was taken on September 8, 2003.
