History of Technology in India, Vol. I: From Antiquity to c. 1200 A.D. v1.c30.s3.22

v1.c30.s3.22

Like their residential structures the Harappans used almost exclusively bricks - both of the sun dried as well as baked variety - for their fortifications. The walls were very thick, broader at the base and tapering upwards. Gates with flanking bastions were provided for. In many cases the ramparts served a dual purpose, defence from enemy and protection from floods. A closely countoured map of each of the places would indicate which of the two was more important from the point of the builders. Such maps are not available at present.