Archeologists have found another five tombs containing remains dating back 4,000 years in Hanoi, Nguyen Lan Cuong, deputy chief of the Vietnamese Association of Archaeology, said.
The tombs, dating back to the Phung Nguyen period (2,000-1,500 BC), were discovered at the Dinh Chang field in Dong Anh District, where Vietnamese scientists unearthed the complete remains of a woman between 30-35 years old from the same period last month.
Scientists had previously excavated ten tombs from different periods of history at the field, including seven containing the remains of children, according to Cuong.
The most recent of the seven excavations at the site, that began on April 15, has so far unearthed remnants from the Phung Nguyen, Dong Dau, Go Mun, and Dong Son cultures that inhabited the Red River Delta millennia ago.
Weapons, pottery, a large copper cooking pot, mold-castings and bronze objects are among the findings at the area covering 20,000 square meters.
Scientists also found a system of holes believed to be the outermost rampart of the Co Loa Citadel, which was built near Phong Khe, about 20 kilometers to the North of today's Hanoi, towards the end of the Hong Bang Dynasty (about 257 BC).