My uncle spent four years in the Libyan desert in the 1980s, welding concrete pipe joints under 50-degree heat. I grew up on his stories — sandstorms, container barracks, the paycheck that bought our family's first apartment. Years later, in a trade meeting in the Gulf, I realized his project wasn't just a family story. It was one of the largest civil engineering feats in history, and Korea built almost all of it: the Great Man-Made River (GMR), a project barely anyone outside Korea and Libya has heard of.
What Exactly Is the Great Man-Made River?
In 1953, oil prospectors under Libya's Sahara found something else: a massive reservoir of fossil water, trapped in sandstone for roughly 10,000 years. The plan was simple to describe and brutal to execute — pump that water from southern wells north through underground pipes to Tripoli, Benghazi, and coastal farmland. Gaddafi called it the eighth wonder of the world when the first water reached the coast in 1991.
Insider's Insight: The pipe segments were 4 meters across, 7.5 meters long, and weighed 75 tons each — cast in Korean-run factories, then hauled across open desert on trailer convoys.
Why Libya Bet on a Korean Company
Around 30 major international firms competed for Phase 1. Dong Ah Construction, a mid-sized Korean company nobody in the industry took seriously, won the 1983 bid at roughly $3.3 billion. Korean labor undercut Western competitors badly, and Dong Ah's parent group also controlled a logistics firm, so manufacturing, transport, and installation ran under one roof.
Real Talk:
My father's generation doesn't romanticize this era — the work was brutal — but there's real pride in it. A country rebuilt from war thirty years earlier had just out-built the biggest firms on the planet.
The Scale of the Construction
Phase 1 laid roughly 1,874 kilometers of pipeline through the desert between 1984 and 1991, drawing on an estimated 11 million person-days of labor. Midway through, US airstrikes on Libya pushed several Western contractors to withdraw. Dong Ah stayed, finished on schedule, and was awarded Phase 2 at $5.31 billion, followed by Phase 3 and 4 at roughly $10 billion in 1996.
The Part Nobody Talks About: By 1993, Dong Ah Group had climbed to fifth among Korean conglomerates by market value, behind only Daewoo, Samsung, Hyundai, and LG — almost entirely because of one desert pipeline.
How the Water Changed Libya, and What Happened to Dong Ah
Once online, the pipeline moved millions of tons of water daily to coastal cities, converting desert into farmland. Unlike desalination, which processes seawater at high energy cost, the GMR simply moved existing freshwater underground — cheaper per ton, but draining a reserve with no natural refill.
Chairman Choi Won-suk personally directed the project for years, and Gaddafi reportedly nicknamed him "Big Man." But back home, Dong Ah's Seongsu Bridge collapsed in Seoul in 1994, and with the 1997 Asian financial crisis, the company went bankrupt in the early 2000s. Korea Express finished the remaining phases through a joint venture called ANC. In 2025, a survey marking $1 trillion in cumulative Korean overseas construction revenue still voted this one of the country's ten most significant achievements abroad.
Worth Noting: As engineering, it's hard to argue with — a mid-sized Korean firm out-built the world's biggest construction companies in one of the harshest places on Earth. As water policy, it's murkier, since the aquifer isn't infinite. What stays with me is smaller: my uncle in his twenties, next to a pipe twice his height, building something that ended up in encyclopedias. Do you have a family story tied to Korea's overseas construction boom? Tell me in the comments.
FAQ: Libya's Great Man-Made River, Explained
What is the Great Man-Made River Project? A Libyan water system pumping ancient underground water from Saharan aquifers to northern coastal cities for drinking and irrigation.
Which Korean company built it? Dong Ah Construction won the 1983 contracts and built the first two phases before its bankruptcy; Korea Express finished the rest.
How large is the pipe used? About 4 meters in diameter, 7.5 meters long, roughly 75 tons per segment.
Why did Gaddafi call it the eighth wonder of the world? He said it at the 1991 ceremony marking the first water's arrival on the coast.
Is the water supply sustainable long-term? It's debated — the aquifer accumulated over roughly 10,000 years and isn't meaningfully replenished.
What happened to the company that built it? Dong Ah collapsed in the early 2000s after the 1994 Seongsu Bridge collapse and the 1997 Asian financial crisis.
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