Pinnacle Glacier (Mount Adams)
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TypeMountain glacier
LocationMount Adams, Yakima and Skamania Counties, Washington, USA
Area1.41 km2 (0.54 sq mi) in 2006[2]
| Pinnacle Glacier | |
|---|---|
 Pinnacle Glacier in the large cirque on the right side of the mountain. | |
  Pinnacle Glacier  Pinnacle Glacier | |
| Type | Mountain glacier |
| Location | Mount Adams, Yakima and Skamania Counties, Washington, USA |
| Coordinates | 46°12′25″N 121°31′43″W / 46.20694°N 121.52861°W[1] |
| Area | 1.41 km2 (0.54 sq mi) in 2006[2] |
| Length | 1.2 mi (1.9 km) |
| Terminus | Talus |
| Status | Retreating |
Pinnacle Glacier is located on the west slopes of Mount Adams a stratovolcano in Gifford Pinchot National Forest in the U.S. state of Washington.[3] The glacier descends from approximately 10,000 ft (3,000 m) to a terminus near 7,200 ft (2,200 m).[3] Pinnacle Glacier lost 7 percent of its surface area between 1904 and 2006.[2]
Pinnacle Glacier was named by Harry Fielding Reid during his survey of Mount Adams' glaciers with C. E. Rusk in 1901.[4]