Great Wall of Sand
Admiral Harry Harris, then commander of the Pacific Fleet, coined the term "Great Wall of Sand" in March 2015 to describe the People's Republic of China's large-scale land reclamation projects in the Spratly Islands. Between late 2013 and late 2016, the PRC dredged sand onto reefs at seven locations, concreting the material to create permanent artificial islands. By the time of the 2015 Shangri-La Dialogue, over a substantial area of new land had been created, and by December 2016, the total had grown further, with "significant" weapons systems, including anti-aircraft and anti-missile systems, installed. The PRC stated the construction aimed to improve living conditions for stationed personnel and provide navigation aid, weather forecasts, and fishery assistance to passing ships. Defense analysts IHS Jane’s characterized the effort as a methodical campaign to build a chain of air- and sea-capable fortresses. The installations included sea-walls, deep-water ports, barracks, and runways on three reclaimed features: Fiery Cross Reef, Mischief Reef, and Subi Reef. The PRC used hundreds of dredges and barges, including the *Tian Jing Hao*, a giant self-propelled cutter suction dredger built in 2009 and credited as the largest of its type in Asia, operating at Cuarteron Reef, the Gaven Reefs, and Fiery Cross Reef. The projects intensified existing territorial disputes, as the Spratly Islands are claimed by China, Taiwan, and Vietnam, with Brunei, Malaysia, and the Philippines also claiming some features. By 2015, Vietnam had established 48 military outposts in the area, the Philippines and Taiwan had eight and one respectively, and Malaysia had five. The reclamation outpaced earlier construction by the Philippines and Vietnam, and by 2023, China had reclaimed around five square miles, with at least one island housing military equipment. Concerns were raised about environmental damage to fragile reef ecosystems from habitat destruction, pollution, and disrupted migration routes.
- field
- Land reclamation and artificial island construction
- nationality
- People's Republic of China
- known_for
- Creating artificial islands in the Spratly Islands to strengthen territorial claims
- area_reclaimed_by_2023
- Around five square miles
- locations
- Fiery Cross Reef, Mischief Reef, Subi Reef, Cuarteron Reef, Gaven Reefs, and others
Lore & Background
The Great Wall of Sand refers to a series of artificial islands constructed by the People’s Republic of China in the Spratly Islands region of the South China Sea, primarily between late 2013 and late 2016. The features were created by dredging sand onto existing reefs and then concreting the material to form permanent structures. The name was first used in March 2015 by U.S. Admiral Harry Harris. The project involved reclamation at seven locations, including Fiery Cross Reef, Mischief Reef, and Subi Reef. By 2023, approximately five square miles of new land had been created. The installations include sea-walls, deep-water ports, barracks, and runways on at least three of the reclaimed features. Defense analysts characterized the effort as a methodical, well-planned campaign to build a chain of air- and sea-capable fortresses. The PRC stated the construction was for improving living conditions and providing navigation aid, while analysts noted the presence of significant weapons systems, including anti-aircraft and anti-missile equipment. The project raised environmental concerns regarding habitat destruction, pollution, and disruption of migration routes in fragile reef ecosystems.
Reader's Guide
The Great Wall of Sand represents a significant escalation in the South China Sea territorial disputes, as China's reclamation outpaced decades of similar activity by the Philippines and Vietnam. China rejected the ruling as null and void. The artificial islands, equipped with runways and weapons systems, transformed submerged reefs into militarized outposts, altering the strategic balance in a region through which half the world's merchant shipping passes. Environmental damage included destruction of coral reefs and marine habitats, potentially violating international environmental treaties to which China is a party.
Frequently Asked Questions
What construction techniques defined the 'Great Wall of Sand' effort?
The core method involved dredging sand from the surrounding seabed and depositing it onto existing reef platforms, then hardening the resulting land with poured concrete. This process elevated previously submerged or low-lying features into stable artificial islands large enough to host infrastructure.
Why does the 'Great Wall of Sand' matter in the broader waterways context?
The project gave the PRC a permanent, hardened physical presence in a stretch of sea where multiple nations hold overlapping sovereignty claims and where a large share of global commercial shipping transits. That permanent footprint shifted the strategic and navigational dynamics of the South China Sea well beyond the construction period itself.
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