Lonar Impact Crater Lake in India Turns Pink Overnight and Scientists Try to Figure Out Why


The colour of water in Maharashtra’s Lonar lake, formed after a meteorite hit the Earth some 50,000 years ago, has changed to pink.

And now scientists are investigating why this 78-hectare-large lake, situated in the world’s largest basaltic impact crater, has changed color overnight.

lonar crater lake turns pink india, crater lake turns pink, pink water in lanar crater lake india
The Lonar Crater Lake turned pink in India overnight. Picture Copernicus EU/Sentinel-2

The 56,000-year-old Lonar crater sanctuary lake in Buldhana district has turned pink overnight.

lonar crater lake turns pink india
Lonar crater lake turns pink in India. No coloration on June 5, 2020. Picture: Copernicus EU/Sentinel-2

The 77.69 hectare lake area is part of the Lonar sanctuary that totals 3.66sqkm. It is famous as the world’s largest basaltic impact crater. Two other similar ones are in Dhala and Ramgarh in Madhya Pradesh and Rajasthan respectively but both are relatively unknown.

lonar crater lake turns pink india, crater lake turns pink, pink water in lanar crater lake india
Lonar crater lake turns bright pink overnight in India. Picture: Copernicus EU/Sentinel-2 on June 10, 2020

Of late, the bright pink color has not only surprised locals, but also nature enthusiasts and scientists.


Experts say this is not the first time that the crater lake’s water turned pink, but this time the color is so bright.

Officials attribute the sudden change in color to the high salinity and presence of algae in the water body:

There are algae in the water body. The salinity and algae can be responsible for this change.”

There is no oxygen below one meter of the lake’s water surface. There is an example of a lake in Iran, where water becomes reddish due to an increase in salinity.

The level of water in the Lonar lake is currently low in comparison to the few past years and there is no rain to pour fresh water in it.

The low level of water may lead to increased salinity and change in the behaviour of algae because of atmospheric changes…this may be the reason for colour change. This is not the first time that the colour of water has changed.”

In case of a natural phenomenon, there are fungi which generally give a greenish colour to water most of the times. This (the current colour change) seems to be a biological change in the Lonar crater.”

The Lonar Lake Formation

The Lonar Impact Crater Lake lies within the only known extraterrestrial impact crater found within the great Deccan Traps, a huge basaltic formation in India.

Lonar Lake was created by the impact of either a comet or of an asteroid, which impacted from the east, at an angle of 35 to 40 degrees, 52,000 – 570,000 years ago.

The Smithsonian Institution, the United States Geological Survey, Geological Survey of India, the University of Sagar and the Physical Research Laboratory have conducted extensive studies of the site. A 2019 study, conducted by IIT Bombay found that the minerals, in the lake soil, are very similar to the minerals found in moon rocks brought back during the Apollo Program.

And did this comet / asteroid also brought some weird life from the outer world? It hink this is why scientists actually investigate this weird crater lake. More strange geology news on Strange Sounds and Steve Quayle. [NDTV, TOI]

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  1. Algae bloom all right. Can grow and invade a lake in 24 hours. We have a very weird lake in our area. The top part of the lake is fresh water. The lower part of the lake is salt water.

    This is even weirder: Fresh water always floats on top of saltwater. However, they have found ocean size bodies of fresh water near the bottom of most of our oceans. So much for the old theories.

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