Vinh Moc Tunnels, located at the southern tip of what was North Vietnam at the DMZ, the Vinh Moc tunnels were built by local villlagers during the Vietnam War to protect civilians in the area from relentless US bombing during the 1960s and early 1970s. They also served a support function for North Vietnamese troops heading south and nearby islands used in providing air defence to North Vietnam.
 

Vinh Moc Tunnels	Vinh Moc Tunnels

At 2kms in length, the tunnels at Vinh Moc are nowhere near the scale of the Cu Chi tunnels outside of Saigon (around 200kms). They do however demonstrate once again the steely determination the Vietnamese showed in the face of incredible military power.