Vinh Moc (Vịnh Mốc) is a tunnel complex in Quảng Trị, Vietnam. During the Vietnam War it was strategically located on the border of North Vietnam and South Vietnam. The tunnels were built to shelter people from the intense bombing in Vinh Linh county of Quảng Trị Province in the Vietnamese Demilitarized Zone. Khe Sanh Combat Base, a large Marines combat base attacked by a massive forces of the North Vietnamese Army in early 1968

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