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Solidified in Salt: Tanzania’s Lake Natron

Miracles of nature are usually praised for their wondrous beauty, often worked into songs or captured in paintings. However, some miracles of nature harbor an equally eerie side. In Tanzania lies a daunting monster that preys viciously in sinister silence. 

Sunlight over Lake Natron. blieusong. CC BY-SA 2.0.

In nearly any social studies class, bodies of water are framed as life-giving and as focal points for the world’s nations. Lakes and rivers are often credited in many civilizations’ lengthy histories for providing a means of transportation and crucial food security. Water itself stands as a symbol of life; ancient Egypt thrived due to fertile soil that would have been absent had it not been for the Nile River. Nonetheless, the complexity of nature has created exceptions to this rule. For instance, in the East African nation of Tanzania lies the deadly Lake Natron. 

Lake Natron sits along the East African Rift System in northern Tanzania, and is 35 miles long and about half as wide. Although often photographed for its location under sunlit clouds and for its serene backdrop, the lake is an abyss for almost all wildlife. 

Lake Natron is a salt lake, meaning it is incredibly alkaline. The deposits of natron, a chemical salt, flow in from the surrounding hills. This causes the lake’s pH level to be a very basic 10.5; this pH level falls only a bit short of that of ammonia and bleach. The water in this lake only flows inward, so evaporation leaves behind hefty salt deposits. Lake Natron can also reach a steamy state, with the water’s temperature recorded to reach 140 degrees Fahrenheit. 

Flamingos on Lake Natron at sunset. virtualwayfarer. CC BY-NC 2.0. 

In addition, a peculiar site is found at the shores of the lake. Long lines of dead birds and bats cover the shoreline, with each specimen preserved in a stonelike state. Scientists explain that the high salinity of the lake “freezes” the animals, perfectly preserving them with all of their wings and feathers in place. Nature photographer Nick Brandt chose to turn this site into a fascinating art project. He perches the birds on branches and poses the bats in order to make them look “alive.” With the help of locals, Brandt collected the best specimens and masterfully crafted chilling portraits of the fallen animals. Brandt suspects that the reflective surface of the lake tricks birds into believing it’s open air, leading the birds to drown in the deadly water. 

However, to say that the lake is completely absent of life is an act of injustice toward the flocks of flamingos that call the lake their home. Nearly 2.5 million flamingos use the lake’s shores as breeding grounds each year, accompanied by thriving algae and a single resilient species of fish. Although a nontraditional ecosystem, Lake Natron’s niche wildlife web requires balance like any other. Threats to divert nearby rivers into Lake Natron would change its water composition, thereby putting the lake’s wildlife at high risk. 

At first glance, Lake Natron appears to be both an example of life imitating art and life imitating horror. Regardless, Lake Natron is the foundation for both important species and scientific study, so there is much to lose if people begin to mistreat it.


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Ella is an undergraduate student at Vassar College pursuing a degree in Hispanic Studies. She wants to assist in the field of immigration law and hopes to utilize Spanish in her future projects. In her free time she enjoys cooking, writing poetry, and learning about cosmetics.