Nearly 1,800 years ago, Karikala Chola built the Kallanai (Grand Anicut) across the Cauvery River in Tamil Nadu using only uncut granite stones, with no cement, steel or machines.
It remains one of the oldest functioning water diversion structures in the world and was later studied by Sir Arthur Cotton.
Full video here: https://youtu.be/1JG1Sh4J_-E
Would love to hear your thoughts on this ancient Indian engineering achievement.
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by Unique-Beginning6930
1 Comment
it’s always fascinating to see how much ancient builders achieved with what seem like very simple tools. when something lasts that long, it usually means they understood the local environment really well, like the river flow, the stone, and how things settle over time. stuff like this reminds me that engineering knowledge didn’t just appear in the modern era. a lot of it was built slowly through observation and experience across generations. It makes you wonder how many other structures around the world were just as impressive but didn’t survive long enough for us to study them today….