| Mount Index | |
|---|---|
 Northeast aspect | |
| Highest point | |
| Elevation | 5,991 ft (1,826 m) NGVD 29[1] |
| Prominence | 2,991 ft (912 m)[1] |
| Coordinates | 47°46′28″N 121°34′51″W / 47.7745488°N 121.5809415°W[2] |
| Geography | |
  Mount Index | |
| Parent range | Cascade Range |
| Topo map | USGS Index |
| Climbing | |
| First ascent | First recorded ascent on October 29, 1911 by H. B. Hinman, Ernest Martin, Lee Pickett, George E. Wright |
| Easiest route | Hike/scramble |
Mount Index is a peak in the central part of the Cascade Range of Washington state. It lies just south of the Skykomish River and U.S. Route 2, at the western edge of the Cascades. Despite its low elevation relative to peaks higher in the Cascades, it is a famous and dramatic landmark due to its topographic prominence. It comprises three pointed spires which rise steeply from a very low base. The main peak is the southernmost of the three, while the North Peak rises even more steeply above the valley. For example, it rises more than 4,250 ft (1,300 m) above the lower slopes on the northeast side in less than 1 horizontal mile (1.6 km).
 | This section's factual accuracy is disputed. (October 2022) |
The first recorded ascent of Mount Index (the main peak) was on October 29, 1911, by H. B. Hinman, Ernest Martin, Lee Pickett, George E. Wright. However, they found a flagpole already on the summit, so theirs was certainly not the first ascent. A much earlier ascent by Native Americans is likely. The first ascent of the steeper, more difficult North Peak was in 1929, by Lionel Chute and Victor Kaartinen, by the North Face Route.
The standard route on the main peak climbs the east side of the peak from Lake Serene. The standard route on the North Peak is the North Face Route, which is a long, moderately technical climb (Grade III, Class 5.6).
Mount Index was once known as West Index Mountain,[2] and Baring Mountain was known as Mount Index instead.[3] They were both renamed in 1917.[4]
- ^ a b "Mount Index, Washington". Peakbagger.com.
- ^ a b "Mount Index". Geographic Names Information System. United States Geological Survey, United States Department of the Interior.
- ^ "Baring Mountain". Geographic Names Information System. United States Geological Survey, United States Department of the Interior.
- ^ Beckey, Fred W. (2003). Cascade Alpine Guide, Vol. 2, Stevens Pass to Rainy Pass (3rd ed.). Mountaineers Books. p. 41. ISBN 978-0-89886-838-8.