First of all, Captain Warren tells us that there was no ravine south of the dome of the rock, for 'the crest of the rocky spur runs from the north-west angle of the Dome-of-Rock platform in a south-east direction to the triple gate in the south wall; and at these two points, and in the line between them, the rock is at the surface.' Secondly, in December, 1868, when the displacement of a stone by the rains enabled Captain Warren to descend beneath the surface of the Haram, he found a souterrain running east and west, in the line of the northern edge of the Mosque platform, the southern side of it being scarped rock, on which the wall supporting the northern edge of the Mosque platform is built, but the rock itself appearing to 'shelve down rapidly to the north.' In the following month Captain Warren ventured to suggest on plan (lithographed plan 32) the possible course of a valley coming from the Gate of the Inspector in the Tyropoeon, and running past the north-western corner of the Dome-of-Rock, out eastward through the Birket Israil (Pool of Bethesda). The souterrain may, as Captain Warren observes, be claimed by one party as the ditch on the northern wall of the temple, and by another as the northern ditch of Antonia; and the valley--which owes its depth in one part of its course to what is doubtingly called a 'natural or artificial ditch'--will of course be claimed as that of the Asamoneans. It is thus, in our opinion, rendered probable that the ground to the west of that valley which runs from Damascus Gate constituted the old town, the φρούριον of David's time, the upper market-place of the days of Josephus; that the dome of the rock and the space to the south of it represent the old Temple-hill; that to the north of this was the valley of the Asamoneans; that between the latter and the valley from Herod's Gate was the city of David, or Zion,[25] and that north-east of the last-named valley was Bezetha. The name Zion got transferred to the Temple-hill, or was made to include it, before or during the times of the Maccabees, probably after the filling-up of the intervening valley, and in the early centuries of the Christian era was transferred to the western hill, which, after the Akra was cut down, was the highest hill of the city.[26] Certainly there is still room for some controversy on these points, and Captain Warren contributes something to the discussion, in a long paper on the 'Comparative Holiness of Mounts Zion and Moriah,' in which he argues that Zion was considered holy when the ark was there, in David's time; that after the ark (and the holiness) were transferred to Moriah, the name Zion got transferred also, and that Josephus refrains from using the term Zion because he is aware of this confusion.