 | This article may require cleanup to meet Wikipedia's quality standards. The specific problem is: neutral point of view, verifiability, and citations are needed. (December 2020) |
| Disputed atoll | |
|---|---|
 | |
  North Danger Reef | |
| Other names | Vietnamese: Cụm Song Tử Chinese: 双子群礁, pinyin: Shuāngzǐ Qúnjiāo |
| Geography | |
| Location | South China Sea |
| Coordinates | 11°25′N 114°21′E / 11.417°N 114.350°E |
| Archipelago | Spratly Islands |
| Total islands | 2 |
| Major islands | Northeast Cay, Southwest Cay |
| Claimed by | |
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North Danger Reef (Vietnamese: Cụm Song Tử) is one of the seven major reefs / banks / etc. in the Spratly Islands area of the South China Sea. It is the most North Western of the features of the Spratly Islands, located to the NW of Dangerous Ground.
The reef is a large (8.5 nautical miles) approximately circular atoll with a central lagoon (~20m deep). The surrounding reef is shallow.[1]