The ground plans shown are the result of a very careful survey, plotted on the ground on a large scale (10 feet to 1 inch—1:120), and the irregularities shown were carefully noted and put down at the time. These irregularities, which are commonly ignored in the preparation
of plans of ruins, are of the highest importance. From them the sequence of construction can often be determined.
The walls of the lower ruin are somewhat obscured by loose débris, of which a large amount is lying about. Roof débris is especially abundant; it consists of small twigs and lumps of clay, with ends of beams projecting here and there. The principal walls occur in the eastern part, where some of them are 2 feet thick and still standing to a height of 10 and 12 and in one place of 14 feet. An inspection of the plan will show that, as is invariably the case where a wall rises to a height of more than one story, the lower part is massive and the upper wall sets back 5 or 6 inches, reducing its thickness by that amount. All the heavy walls occur either about the kiva or east of it. Apparently these walls were built first especially heavy and massive, and afterward, when upper stories were added, it was not found necessary to carry them up the full thickness. It will be noticed that the wall extending eastward from the corner of
the kiva, and which is from a foot to 6 feet high at the present time, extends through the heavy wall which crosses it 33 feet to the east, and is continuous to its termination about 50 feet east, against another heavy wall. The last-mentioned wall is also continuous from the cliff out to the front of the ruin, a distance of about 46 feet.
The heavy walls of the lower ruin are immediately under the upper cave. Back of them the cliff presents an almost smooth face of rock, 35 feet high and slightly overhanging. On this rock face there are marks which show that formerly there were upper stories, the rooms of which are outlined upon it. The rock surface was coated in places with a thin wash of clay, doubtless to correspond with the other walls of the rooms, but this coating was necessarily omitted where the partition walls and roofs and floors abutted on the rock. This is shown in [plate XLVII]. Although the marks are now so faint as to be easily overlooked, at a certain hour in the day, when the light falls obliquely on the rock, they can be clearly made out. At a point about 50 feet east of the kiva the structure was three stories higher than it is now. The roof of the upper story was within 4 feet of the floor of the cave, and under the gap or gateway in front of the main room above. West of this point there are the marks of but two stories additional. Farther west the structure rose again, but not to the height attained on the east.
The kiva was placed directly against the cliff. This is an unusual arrangement; but it will be noticed that the walls in front of it are of a different character from those on the east, and it is probable that when the kiva was built it opened to the air. The kiva is also anomalous in its construction. It presents the usual features of the inner circular chamber and an inclosing rectangular wall, but in this case the intermediate space was filled in solidly, and perhaps was so constructed. The kiva is still 6 feet deep inside, which must be nearly its maximum depth, and the roof was probably placed at a level not more than a foot or two above the present top. Whether the village was placed on a slight raise, or on the flat, level with the bottom land about it, and subsequently filled up with the debris of masonry, etc, can not be determined without excavation; but the top of the kiva is now 16 feet above the general level of the bottom land, and its bottom 10 feet above that level. It is possible that the kiva was much deeper than now appears, as no sign of the usual interior bench can be seen above the present ground surface, nor can any connection with the chimney-like structure to the south of it be determined, yet such connection must have existed. Probably not only this kiva but the whole ruin would well repay excavation.
The interior of the kiva was not exactly circular, being a little elongated northeast and southwest. The inclosing wall on the east is still standing in one place to a height of 5 feet above the top of the kiva structure, and about a foot above that level is marked by a setback, which reduces its thickness. Apparently the upper part was added at
a date some time subsequent to the completion of the kiva structure, as the wall on the south, now some 3 feet above the level mentioned, does not conform to the lower exterior wall on which it was placed. On the western side there is another fragment of the upper inclosing wall. Both this wall and the one on the south are less than 15 inches in thickness.
West of the kiva there are remains of other stone walls which differ in character from those on the east. They are now usually less than 3 feet high; they were 12 to 15 inches thick, and the lines are very irregular. South of the kiva, in the center of the ruin, there are other stone walls even thinner and more irregularly placed than those on the west, but most of the walls here are of adobe. As the use of adobe blocks is not an aboriginal feature, the occurrence of these walls is a matter of much interest, especially as they are so intimately associated with the stonework that it is not always an easy matter to separate them.
The occurrence and distribution of adobe walls is shown on the ground plan. They are not found as subordinate walls, dividing larger rooms, except perhaps in one instance; but apparently this method of construction was employed when it was desired to add new rooms to those already constructed. No room with walls constructed wholly of adobe can be made out, but walls of this character closing one side of a room are common, and rooms with two or even three sides of adobe are not uncommon. There are some instances in which part of a wall is stone and part adobe, and also instances in which the lower wall, complete in itself, is of stone, while the upper part, evidently a later addition, is of adobe; such, for example, is the cross wall in the eastern tier, about 30 feet from the cliff.