500 BC to 1000 BC and the bridge is there for 1.73 million years ... Valmiki should be a time machine to see things 1.73 million years back .. and by the way iam not advocating for destroying the natural bridge for some cheap political mileage . My concern is only this.. The government should not stoop to somebody's claim of Ram-ravan mythology and stop the developmental activity if its economical and geologically safe ....