Lake with high salinity (4,3)

I believe the answer is:

dead sea

(Other definitions for dead sea that I've seen before include "Inland salt lake in the Jordan valley of Israel" , "Lake of Jordan/Israel" , "Lake in Jordan valley where Scrolls were found" , "Salty lake on the Israel/Jordan border" , "River Jordan flows into this" .)

I've seen this clue in The Guardian.

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