Water conservation of Dholavira’s second hallmark . . . .the largest two measured about 73 X 29 M and 33 X 9 me respectively, with the latter carved out of massive rock, making it in Bishr’s opinion, ‘the earliest ever rock-cut example’ of water structure (Fig 7.10). They were partly fed by rainwater harvested from castle, where complex stone structures were built to that effect. Elsewhere, huge stone drains, high enough for a man to walk through, directed storm water to the western and northwestern sections of the lower town separated by broad bunds, creating in effect as many reservoirs. Their main supply however, came from the two seasonal streams to the north and south of the city, whose waters wee slowed down by a series of dams and partly deflected to the lower town. Altogether, as much as a third of Dholavira’s area was intended to conserve water; in effect, the monsoon mush have turned into a kind of lake city. ~ Page 169