Inside India's human laundry
19 June 2012 Last updated at 00:06 BST
It has been described as one of the world's largest laundries - Dhobi Ghat in the centre of Mumbai is where hundreds of thousands of clothes are washed daily, in a ritual which has - so far - stood the test of time.
But with more Indians now owning washing machines, what future does this old tradition have in modern India?
Rajini Vaidyanathan has been taking a look.