| The Rockpile | |
|---|---|
| Quang Tri Province, South Vietnam | |
 Photograph of the Rockpile and surrounding terrain from 2010 | |
| Coordinates | 16°46′49.82″N 106°51′7.37″E / 16.7805056°N 106.8520472°E |
| Type | Marines[clarification needed] |
| Site history | |
| Built | 1966 |
| In use | 1966–1973 |
| Battles/wars |  Vietnam War |
| Garrison information | |
| Occupants | 3rd Marine Division, 1st Marine Division |
The Rockpile (also known as Elliot Combat Base) and known in Vietnamese as Núi Một, is a solitary karst rock outcropping north of Route 9 and south of the former Vietnamese Demilitarized Zone (DMZ). Its relatively inaccessible location, reached only by helicopter, made it an important United States Army and US Marine Corps observation post and artillery base from 1966 to 1969.