"a high and corbel-arched drain which wound down the western side of the citadel-mound". There were ranges of subsidiary rooms, one containing a well which supplied water for the bath, and there was a staircase leading up to the now-vanished upper storey or flat roof.

Other suites of rooms, each including eight small bathrooms, were found north of the Great Bath, carefully and solidly built. Their well-made brick floors were drained by runnels communicating with a drain, and every room had a small brick staircase which presumably led to an upper storey.

Even more remarkable than the Great Bath was a building lying to its west. It had first been detected by Mr. Ernest Mackay in the thirties; he had noted solid blocks of brick-work, each about five feet high, divided each from the other by narrow passages. Mackay thought that these might be the remains of a hammam or hot-air bath, but when the building was more or less completely cleared by Wheeler in 1950, its real purpose was revealed. It was the substructure of an enormous granary, which originally had been 150 feet long and 75 feet wide, built, like the rest of the city, of mud-brick. When fully revealed some of the walls were found standing to a height of more than 20 feet, "The outer walls of the massive platform were sloped, giving the building a grim, fortress-like appearance, and at the northern end was a brick platform, the walls of which were similarly sloped, save at one point where they were vertical, "evidently to facilitate the hauling up of bales deposited underneath".

The criss-cross arrangement of supporting walls was probably intended to assist air-circulation, and there were vertical air-shafts let into the outer walls. The granary itself, of which only the platform remained, had been built of timber. In area it was approximately the same as the group of granaries found at Harappa.

North-east of the Great Bath was another large building, substantially built, with a large open court and a number of small barrack-like rooms, some of which are carefully paved with bricks, and have staircases. It has been suggested that this was a "collegiate" building for priests, but this has yet to be proved. The buildings which lie underneath the Buddhist stupa and monastery cannot be touched at present; there are those who believe that there may be found the temple of the deity or deities worshipped by the Harappans. The arrangement of the citadels of Harappa and Mohenjodaro recall the theocratic administrations of ancient Sumeria; at Ur for instance, the priests of the moon-god administered cloth-factories, breweries, bakeries and blacksmiths, on behalf of the god, and, of course, the state. For the present this must remain pure