You may be thinking of Lake Vanda, with salinity about 10 times that of sea water.
Lake Antarctica and Lake Antarctica Junior.
From what I heard there is a lake in Antarctica called Lake Vostok, but I don't think that there's a river in Antarctica.
The mouth of the Onyx River is located in Antarctica, specifically in the Wright Valley of the McMurdo Dry Valleys. It flows into Lake Bonney, which is a saline lake characterized by its unique ecosystem. The Onyx River is notable for being the longest river in Antarctica, although its flow is seasonal, primarily occurring during the summer melt.
The driest lake in the world is the McMurdo Dry Valleys' Lake Vanda in Antarctica. It experiences extreme aridity due to its location, which is shielded from moisture by surrounding mountains and has minimal precipitation. The lake has a unique saline composition that results in very low water levels, making it one of the most arid environments on Earth.
the bodies of Antarctica is lake voston
The saltiest lake in India is Sambhar Salt Lake. It is the largest saline lake in India, and it produces about 9% of India's salt.
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Sambhar Lake is in India. Search it on Wikipedia for more information. (Yes it's a saline lake).
Lake Assai is located in Djibouti in the middle of the Danakil Desert. It is a saline lake located 155 meters below sea level.
It's amount of salt in a liquid body. The Great Salt Lake in Utah is very saline and would therefore have a high salinity. The Dead Sea is also very saline.