Maps codify the miracle of existence, “Nicholas Crane.” Modern sewerage and drainage system is the representation of civilised society. The ruins of the Indus valley civilisation in Asia shows the sign of structured sanitation. The Indus Valley city of Lothal in 2350 BC had toilets in every home with brick work covered sewers. It is the significance of Indus valley that it contained atavistic world’s most sophisticated sewage system. Now due to the sewers covered designs it present a problem with finding its exact location for maintenance purposes. To solve this issue, we use maps.