Mackay continues about the building in Block 22 (p. 153):
"There are, for instance, two footings, each about 6 ins. Wide, along the southern side of room 3, the lower one 8.3 ft. and the other 6.2 ft. below datum, with a doorway above them at the level - 4.5 ft. Further digging would probably reveal other walls below, but provisionally we must assign the building as we see it to the Late II Phase, though on general grounds I am almost certain that it will be found to have existed in the Late III Phase, if not earlier still."