[Access.]—The last described semi-subterranean kiva and the similar one in the court of the village, show a short flight of stone steps on their eastern side. Entrance to the ceremonial chamber is prevented when necessary by the removal of the ladder from the outside, or in some instances by the withdrawal of the rungs, which are loosely inserted into holes in the side pieces. There is no means of preventing access to the exposed trap doors, which are nearly on a level with the ground. As a matter of convenience and to facilitate the entrance into the kiva of costumed and masked dancers, often encumbered with clumsy paraphernalia, steps are permanently built into the outside wall of the kiva in direct contradiction to the ancient principles of construction; that is, in having no permanent or fixed means of access from the ground to the first roof. These are the only cases in which stone steps spring directly from the ground, although they are a very important feature in Tusayan house architecture above the first story, as may be seen in any of the general views of the villages. The justification of such an arrangement in connection with the indefensible kiva roof lies obviously in the different conditions here found as compared with the dwellings.

The subterranean kiva of the Shumopavi group, above illustrated, is exceptional as occurring at some distance from the mesa rim. Probably all such exceptions to the rule are located in natural fissures or crevices of the sandstone, or where there was some unusual facility for the excavation of the site to the required depth. The most noteworthy example of such inner kiva being located with reference to favorable rock fissures has been already described in discussing the ground plan of Walpi and its southern court-inclosed kiva ([p. 65]).

[Masonry.]—The exterior masonry of these chambers seems in all cases to be of ruder construction than that of the dwelling houses. This is particularly noticeable in the kivas of Walpi on the mesa edge, but is apparent even in some of the Zuñi examples. One of the kivas of house No. 1 in Zuñi, near the churchyard, has small openings in its wall that are rudely framed with stone slabs set in a stone wall of exceptional roughness. Apparently there has never been any attempt to smooth or reduce this wall to a finished surface with the usual coating of adobe mud.

In Tusayan also some of the kiva walls look as though they had been built of the first material that came to hand, piled up nearly dry, and with no attempt at the chinking of joints, that imparts some degree of finish to the dwelling-house masonry. The inside of these kivas, however, is usually plastered smoothly, but the interior plastering is applied on a base of masonry even in the case of the kivas that are wholly subterranean. It seems to be the Tusayan practice to line all sides of the kivas with stone masonry, regardless of the completeness and fitness of the natural cavity. It is impossible, therefore, to ascertain from the interior of a kiva how much of the work of excavation is artificial and how much has been done by nature. The lining of masonry probably holds the plastering of adobe mud much better than the naked surface of the rock, but the Tusayan builders would hardly resort to so laborious a device to gain this small advantage. The explanation of this apparent waste of labor lies in the fact that kivas had been built of masonry from time immemorial, and that the changed conditions of the present Tusayan environment have not exerted their influence for a sufficient length of time to overcome the traditional practice. As will be seen later, the building of a kiva is accompanied by certain rites and ceremonies based on the use of masonry walls, additional testimony of the comparatively recent date of the present subterranean types.

[Orientation.]—In questioning the Tusayan on this subject Mr. Stephen was told that no attention to the cardinal points was observed in the plan, although the walls are spoken of according to the direction to which they most closely approximate. An examination of the village plans of the preceding chapters, however, will show a remarkable degree of uniformity in the directions of kivas which can scarcely be due to accident in rooms built on such widely differing sites. The intention seems to have been to arrange these ceremonial chambers approximately on the north and south line, though none of the examples approach the meridian very closely. Most of them face southeast, though some, particularly in Walpi, face west of south. In Walpi four of the five kivas are planned on a southwest and northeast line, following the general direction of the mesa edge, while the remaining one faces southeast. The difference in this last case may have been brought about by exigencies of the site on the mesa edge and the form of the cavity in which the kiva was built. Again at Hano and Sichumovi (Pls. [XVI] and [XVIII]) on the first mesa this uniformity of direction prevails, but, as the plans show, the kivas in these two villages are few in number. The two kivas of Shupaulovi will be seen ([Pl. XXX]) to have the same direction, viz, facing southeast. In Shumopavi ([Pl. XXXIV]) there are four kivas all facing southeast. In Mashongnavi, however ([Pl. XXVI]), the same uniformity does not prevail. Three of the kivas face south of east, and two others built in the edge of the rocky bench on the south side of the village face west of south. In the large village of Oraibi there is remarkable uniformity in the direction of the many kivas, there being a variation of only a few degrees in direction in the whole number of thirteen shown on the plan ([Pl. XXXVI]). But in the case of the large kiva partly above ground designated as the Coyote kiva, the direction from which it is entered is the reverse of that of the other kivas. No explanation is offered that will account for this curious single exception to the rule. The intention of the builders has evidently been to make the altar and its attendant structural features conform to a definite direction, fixed, perhaps, by certain requirements of the ceremonial, but the irregularity of the general village plan in many cases resulting from its adaptation to restricted sites, has given rise to the variations that are seen.

In Zuñi there was an evident purpose to preserve a certain uniformity of direction in the kiva entrances. In house No. 1 (Pls. [LXXVI] and [LXXVII]) there are two kivas, distinguishable on the plan by the large divided trap door. The entrance of these both face southeast, and it can readily be seen that this conformity has been provided intentionally, since the rooms themselves do not correspond in arrangement. The roof opening is in one case across the room and in the other it is placed longitudinally. As has been pointed out above, the general plan of arranging the kivas is not so readily distinguished in Zuñi as in Tusayan. Uniformity, so far as it is traceable, is all the more striking as occurring where there is so much more variation in the directions of the walls of the houses. Still another confirmation is furnished by the pueblo of Acoma, situated about 60 miles eastward from Zuñi. Here the kivas are six in number and the directions of all the examples are found to vary but a few degrees. These also face east of south.

There are reasons for believing that the use of rectangular kivas is of later origin in the pueblo system of building than the use of the circular form of ceremonial chamber that is of such frequent occurrence among the older ruins. Had strict orientation of the rectangular kiva prevailed for long periods of time it would undoubtedly have exerted a strong influence towards the orientation of the entire pueblo clusters in which the kivas were incorporated; but in the earlier circular form, the constructional ceremonial devices could occupy definite positions in relation to the cardinal points at any part of the inner curve of the wall without necessarily exerting any influence on the directions of adjoining dwellings.

[The ancient form of kiva.]—In none of the ruins examined in the province of Tusayan have distinct traces of ancient kivas been found, nor do any of them afford evidence as to the character of the ceremonial rooms. It is not likely, however, that the present custom of building these chambers wholly under ground prevailed generally among the earlier Tusayan villages, as some of the remains do not occupy sites that would suggest such arrangement. The typical circular kiva characteristic of most of the ancient pueblos has not been seen within the limits of Tusayan, although it occurs constantly in the ruins of Canyon de Chelly which are occasionally referred to in Tusayan tradition as having been occupied by related peoples. Mr. Stephen, however, found vestiges of such ancient forms among the debris of fallen walls occupying two small knolls on the edge of the first mesa, at a point that overlooks the broken-down ruin of Sikyatki. On the southeast shoulder of one of the knolls is a fragment of a circular wall which was originally 12 feet in diameter. It is built of flat stones, from 2 to 4 inches thick, 6 to 8 inches wide, and a foot or more in length, nearly all of which have been pecked and dressed. Mud mortar has been sparingly used, and the masonry shows considerable care and skill in execution; the curve of the wall is fairly true, and the interstices of the masonry are neatly filled in with smaller fragments, in the manner of some of the best work of the Canyon de Chelly ruins.

The knoll farther south shows similar traces, and on the southeast slope is the complete ground plan of a round structure 16½ feet in diameter. At one point of the curved wall, which is about 22 inches thick, occurs the characteristic recessed katchinkihu (described later in discussing the interior of kivas) indicating the use of this chamber for ceremonial purposes.

Although these remains probably antedate any of the Tusayan ruins discussed above (Chapter II), they suggest a connection and relationship between the typical kiva of the older ruins and the radically different form in use at the present time.