From which Harappan site was the drains made of burnt bricks have been discovered? Drainage system was present in every Harappan settlement. Drains made of burnt bricks have been discovered from the Harappan site of Lothal in Gujarat. Related posts: Why is the word ‘culture’ used for the Harappan civilisation? What were the most distinctive features of the cultures which existed prior to the Mature Harappan period? Did the Harappan people domesticate animals? Explain. Which two Harappan settlements were entirely fortified?