Qualla: Ban Karai Pass: The Gap They Could Not Close

Ban Karai Pass: The Gap They Could Not Close: Introduction

Mon, 17 Aug 2026 00:00:00 GMT

In March 1969, American UC-123 transports sprayed defoliant across four square miles of jungle in the Annamite Range. The target was not a base or a town. It was a single approach road feeding a saddle in the mountains 418 meters above sea level, a gap so ordinary that most maps of Vietnam never bothered to name it. The Ban Karai Pass mattered entirely because of what moved through it. Stripping the canopy was one attempt among many to make that traffic visible, and like nearly every other attempt, it did not work for long.

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Ban Karai Pass: The Gap They Could Not Close: A Gap in the Truong Son

Mon, 17 Aug 2026 00:00:00 GMT

The Annamite Range runs down the spine of Indochina like a wall laid on its side. Vietnamese call it the Truong Son, the Long Mountains, and the Ban Karai Pass cuts through it roughly 60 kilometers southwest of Dong Hoi and 115 kilometers northwest of Quang Tri. On the Vietnamese...

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Ban Karai Pass: The Gap They Could Not Close: Turnpike, and Everything After

Mon, 17 Aug 2026 00:00:00 GMT

From 19 April to 24 June 1968, the U.S. Air Force ran Operation Turnpike, an intensive interdiction campaign aimed squarely at the Mu Gia and Ban Karai passes and heavy enough to include B-52 strikes. It was a prelude. That November, Commando Hunt began - seven numbered campaigns...

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Ban Karai Pass: The Gap They Could Not Close: When the Guns Answered

Mon, 17 Aug 2026 00:00:00 GMT

In 1968, the defenses around the pass were machine guns and light anti-aircraft artillery in the 23mm and 37mm range - dangerous to a low-flying aircraft, survivable to most. That changed. In December 1970 the North Vietnamese moved SA-2 surface-to-air missiles onto their side of...

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Ban Karai Pass: The Gap They Could Not Close: The Labor of Keeping a Road Open

Mon, 17 Aug 2026 00:00:00 GMT

None of this happened by itself. Group 559, formed in September 1959, was the unit responsible for the trail, and by 1967 it had completed 2,959 kilometers of road capable of taking vehicles. As many as 43,000 North Vietnamese and Laotians were working the system at a time - oper...

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Ban Karai Pass: The Gap They Could Not Close: What Is Left in the Ground

Mon, 17 Aug 2026 00:00:00 GMT

By the campaign's own accounting, more than three million tons of ordnance fell on Laos during these years, roughly three times the tonnage dropped on North Vietnam itself. A great deal of it landed in the hills around Ban Karai and Mu Gia. Much of what missed is still there, and...

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