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A vast seasonal salt marsh that floods in the monsoon and bakes to a white crust in the dry season.

The Rann was once a shallow arm of the Arabian Sea; uplift and silting cut it off, leaving a huge low flat that the monsoon and high tides submerge, then the sun evaporates into a blinding sheet of salt. Historic earthquakes here have shifted the land and dammed rivers.

The Little Rann shelters the last wild asses of India, while the Great Rann’s flats host one of the world’s great breeding gatherings of flamingos.

Sources

• Geological Survey of India

A short reference note: this summary draws on third-party sources such as the Geological Survey of India and Wikipedia. In time I plan to give every geological feature its own learning-oriented write-up — with custom diagrams, graphs, and study pointers — as I’ve already done for the 11 locations that have an Instagram reel.