Residents found a 300-kilogram bomb left over from the Vietnam War under a field in the Central Highlands province of Dak Nong Wednesday, Vietnam News Agency reported.
The residents of Dak R'lap District discovered the 1.6-meter long bomb with its head buried and its body part protruding 50 centimeters from the ground.
The unexploded bomb is located around 200 meters away from a road used by locals.
After the residents informed local authorities of the discovery, military officers erected a fence and a warning sign surrounding the bomb while waiting for sappers to come and defuse it.
Around 6.6 million hectares, or more than a fifth of Vietnam's land area, contains UXOs (unexploded ordnances), according to official figures. Just 300,000ha (741,316 acres) have been cleared so far.
Experts estimate it will take hundreds of years and billions of dollars to completely get rid of the remaining bombs, shells and landmines.
Since 1975, when the Vietnam War ended, UXOs have killed more than 40,000 people and injured 60,000 .