Long Wall of Quảng Ngãi

The Long Wall of Quang Ngai (Vietnamese: Trường lũy Quảng Ngãi),Truong luy, or the Great Wall of Vietnam is a 127.4-kilometre (79.2 mi) rampart extending from Vietnam's Quảng Ngãi Province in the north to Binh Dinh Province in the south. It is the longest monument in Southeast Asia.

According to Đại Nam thực lục (English: The Veritable Records of the Great South) and other archives from the reign of Emperor Đồng Khánh, the wall was constructed in 1819 by Lê Văn Duyệt, a high-ranking mandarin, under Emperor Gia Long early in the Nguyễn Dynasty. The wall is considered the "greatest engineering feat" of the Nguyễn Dynasty. Nguyen Tien Dong contended that the wall was constructed over 500 years ago and was adopted for military purposes during the 19th century. Nguyen Dang Vu, director of the Department of Culture, Sports and Tourism of Quảng Ngãi, said that parts of the wall in mountainous regions existed hundreds of years ago. It was possibly constructed by General Bui Ta Han (1496–1568) when he became the leader of Quảng Nam. Archaeologists have excavated ceramic relics that verify the 16th-century origin.

In 2005, Andrew Hardy, head of the Hanoi headquarters of École française d'Extrême-Orient, came upon a textual reference to a "Long Wall of Quang Ngai" in the "Descriptive Geography of the Emperor Dong Khanh", an 1885 Nguyễn Dynasty court document. An excavation crew was assembled; led by Hardy and archaeologist Nguyen Tien Dong of the Institute of Archaeology at the Vietnam Academy of Social Sciences, the team discovered the wall after five years of searching. In 2009, they had uncovered the first portion of the wall in Nghĩa Hành District. The wall has since been a destination of some independent explorers.

...
Wikipedia