The middle room had three doorways, one above the other, all opening eastward.  The lowest doorway opened directly on the floor level, and was 2 feet wide, with vertical sides.  Its height could not be determined, as the top was completely broken away and merged with the opening above, but the bottom, which is also the floor level, is 6 feet 9 inches below the level of the first roof beams.  The doorway of the second story is preserved only on the northern side.  Its bottom, still easily distinguishable, is 1 foot 6 inches above the bottom of the floor beams.  It was not over 2 feet wide and was about 4 feet high.  The upper doorway is still well preserved, except that the lintels are gone.  It is about three inches narrower at the top than at the bottom and about 4 feet high.

In addition to its three doorways, all in the eastern wall, the middle tier of rooms was well provided with niches and holes in the walls, some of them doubtless utilized as outlooks.  On the left of the upper doorway are two holes, a foot apart, about 4 inches in diameter, and smoothly finished.  Almost directly above these some 3 feet, and about 2 feet higher than the top of the door, there are two similar holes.  Near the southern end of the room in the same wall there is another round opening a trifle larger and about 41/2 feet above the floor level.  In the western wall there are two similar openings, and there is one each in the northern and southern walls.  All these openings are circular, of small diameter, and are in the upper or third story, as shown on the elevations herewith, figure 330.  The frequency of openings in the upper or third story and their absence on lower levels, except the specially arranged openings described later, supports the hypothesis that none of the rooms except the middle one were ever more than two stories high and that the wall remains above the second roof level represent a low parapet.

[Illustration:  Pl.  LVIII:  Square Opening in South Room.]

In the second story, or middle room of the middle tier, there were no openings except the doorway in the eastern wall and two small orifices in the western wall.  In the middle of this wall there is a niche about 18 inches below the roof, and a foot below this is a round-cornered opening measuring about 7 by 8 inches extending through the wall.  This opening was on a level with another in the western wall of the western room, and commanded a far-reaching though contracted view toward the west.  Below and a little northward is a similar though somewhat larger opening corresponding to an opening in the western wall of the western room.

[Illustration:  Fig. 330.—­Elevations of walls, middle room.]