Cuarteron Reef, Coral reef formation in Spratly Islands, South China Sea
Cuarteron Reef is a coral reef formation in the Spratly Islands within the South China Sea. The structure sits in a remote section of the western archipelago and features natural coral formations with gradual shallow-water zones.
The reef underwent significant modification starting in 2014 through land reclamation work and received artificial structures including buildings and communication facilities. This transformation of the natural coral area into an operational site developed over several years.
The reef bears different names across regional languages, reflecting the multicultural claims and interests in the South China Sea maritime territory.
The site sits in a remote maritime zone and is not easily accessible to ordinary visitors. Access typically requires special permits and specialized sea or air transportation logistics.
Satellite imagery reveals five communication antennas and radar towers spread across the reclaimed landmass, making it a substantial monitoring point.
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