History of Technology in India, Vol. I: From Antiquity to c. 1200 A.D. v1.c29.s1.t1.16

v1.c29.s1.t1.16

Kalibangan (Dt. Ganganagar; Rajasthan): Both the citadel (240 m N-S×120m E-W) and the lower town (240 m E- W×360 m N-S) are parallelogram in shape and are surrounded separately by a massive defence wall which is 3.5 to 9 meter thick made of mud bricks of 40×20×10 cm size in its earlier phase and 30×15×7.5 cm in its later phase. The fortification wall is mud plastered and is reinforced with rectangular salients and bastions.