A1 Hill is located in Muong Thanh Ward, Dien Bien Phu city, Dien Bien province. It played an important role in controlling the whole battle of Dien Bien Phu.
The hill is 32 meters high, 82 thousand square meters large and 500 meters west of the headquarters of the French during the Dien Bien Phu campaign. A1 Hill possesses three defense lines. One of them which stretched from the Cay Da blockhouse and protected the way to the hilltop has currently been the main road leading to the top of Hill A1.
A1 Hill was the scene of the fiercest fighting between Vietnamese and French armies in 1954. After 39 nights and days of fierce fighting, Vietnamese Army showed their bravery and dig a long trench to lay 1000kg of explosive; detonated in the night of May 6th
, 1954. In May 7th
, 1954 morning, Vietnamese People’s Army seized control of A1 hill to pave the way for the last attack into the French Headquarters and got complete victory, ended the 9-year French colonial rule in Viet Nam.
Tourists can easily realize a hole atop Hill A1 – which resulted from the pressure of an explosion in Dien Bien Phu Battle. This hole has become one of the most tourists’ attractions.