Bhirrana is a special place that is really, really old. A long, long time ago, people used to live there and do different things like farming and making things out of rocks. We know this because scientists have found lots of old things left behind by those people, like tools and pottery.
The scientists also studied the dirt and rocks in Bhirrana and found out that it used to be near a big river. The river was very helpful for the people who lived there because they could use the water for drinking and growing crops. But over time, the river changed its course and went away.
Even though the people don't live in Bhirrana anymore, we can still learn a lot from what they left behind. It's like a cool puzzle that teaches us about the past and helps us understand how the world used to be.