Pentagon Mountain
| Pentagon Mountain | |
|---|---|
Aerial view of east aspect | |
| Highest point | |
| Elevation | 8,873 ft (2,704 m) |
| Prominence | 1,353 ft (412 m) |
| Parent peak | Three Sisters, North (8,900 ft) |
| Isolation | 10.86 mi (17.48 km) |
| Coordinates | 47°55′38″N 113°07′29″W / 47.92728212°N 113.12481885°W |
| Geography | |
| Location | Flathead County, Montana, U.S. |
| Parent range | Rocky Mountains Flathead Range Trilobite Range |
| Topo map | USGS Pentagon Mountain |
| Geology | |
| Rock age | Precambrian |
| Rock type | Sedimentary rock |
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Pentagon Mountain is an 8,873-foot (2,704-metre) mountain summit located in Flathead County of the U.S. state of Montana.