It sloped inward as all the walls do but was made up of gigantic blocks of cut into very irregular shapes or angles. Many of the blocks in this wall were 4 or 5 feet long by 2 or 3 wide. One of the bignest stones had 12 angles. And then was a triangular in shape, the one figured in one of N.B. papers. This large stone irregular wall was under of a green stone like serpentine above which in places was a narrow wall made of andesite + of small regular blocks. The joining fits perfect in each case but the older wall had large blocks + rougher on the surface. Many of the surfaces were curved slightly. This is the only place in Cuzco where a wall of this character was seen afterwards me went along other even walled streets to the Temple of the Sun which is now Santo Domingo Cathedral, Here the wall seemed about 20 feet high and made of small square blocks of dark desmablastic andesite. The