Describe the organisation of the citadel in the town planning of Harappa.

The Citadel was a raised platform, rectangular in shape and about 12 meters high. It was constructed with bricks and stones with watchtowers. It had massive walls and its height acted as a protection against floods. It is believed that the ruler along with his nobles lived here. Important public buildings like the great bath, the granary, the assembly hall and the workshops were located here.