[PLATE XXXVII., Fig.

3.] It seems to have consisted of three gateways, whereof the inner and outer were ornamented with colossal human-headed hulls and other figures, while the central one was merely panelled with slabs of alabaster.

Between the gateways were two large chambers, 70 feet long by 23 feet wide, which were thus capable of containing a considerable body of soldiers.

The chambers and gateways are supposed to have been arched over, like the castles' gates on the bas-reliefs.

The gates themselves have wholly disappeared: but the debris which filled both the chambers and the passages contained so much charcoal that it is thought they must have been made, not of bronze, like the gates of Babylon, but of wood.