Black Reef, el. 6,378 feet (1,944 m),[1] is a small mountain range west of Augusta, Montana in Lewis and Clark County, Montana.
| Black Reef | |
|---|---|
  Black Reef | |
| Highest point | |
| Elevation | 6,378 ft (1,944 m) |
| Coordinates | 47°35′29″N 112°51′16″W / 47.59139°N 112.85444°W |
| Geography | |
| Country | United States |
| State | Montana |