Cả River

However, it was called usually as sông Rung ("the Krung river") by indigenous people.

This word has therefore been signed in Chinese characters as sông Lam or Lam-giang ("the blue river", K'lam, Kẻ Lam of Khả-lam in ancient Annamese language).

It originates in the Loi Mountains of Laos, crossing Laos's Xiangkhouang Province, Vietnam's Nghệ An and Hà Tĩnh provinces and empties into the Gulf of Tonkin, on the North Central Coast of Vietnam, after a 512 km journey.

[1] The Cả River zone is classified as 300 km by the Vietnam Geographical Survey.

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