Vịnh Mốc tunnels

The complex grew to include wells, kitchens, rooms for each family and spaces for healthcare.

The only direct hit was from a bomb that failed to explode; the resulting hole was utilized as a ventilation shaft.

The locals began to dig tunnels in 1965 and finished in 1967 with simple tools in 18,000 labor days.

[citation needed] Today, the tunnels are a tourist attraction and can be visited on organised tours.

Beside individual tours to the tunnels, they are regularly part of day trips, starting from Huế to explore the DMZ.