Da Nang, April 11 -- Constructed deep inside enemy-held territory, the Ky Anh Tunnels remain a striking testament to the resilience and determination of revolutionary soldiers and residents of the former Quang Nam province (now Da Nang city) during the intense years of the resistance war against the US.

More than six decades later, memories of springtime spent around the tunnels continue to resonate among local communities, who proudly recount stories of wartime perseverance to visitors exploring the National Historical Site.

An underground stronghold

During the war, the Ky Anh Tunnels lay approximately 7km from the centre of the former Saigon administration and just 2km from a US military base. The network functioned as a crucial logi...