In continuation of the kiva building process, the tops of the walls are brought to an approximate level. The main roof timbers are then laid parallel with the end walls, at irregular distances, but less than 3 feet apart, except near the middle, where a space of about 7 feet is left between two beams, as there the hatchway is to be built. The ends of the timbers rest upon the side walls, and as they are placed in position a small feather, to which a bit of cotton string is tied (nakwakwoci) is also placed under each. Stout poles, from which the bark has been stripped, are laid at right angles upon the timbers, with slight spaces between them. Near the center of the kiva two short timbers are laid across the two main beams about 5 feet apart; this is done to preserve a space of 5 by 7 feet for the hatchway, which is made with walls of stone laid in mud plaster, resting upon the two central beams and upon the two side pieces. This wall or combing is carried up so as to be at least 18 inches above the level of the finished roof. Across the poles, covering the rest of the roof, willows and straight twigs of any kind are laid close together, and over these is placed a layer of dry grass arranged in regular rows. Mud is then carefully spread over the grass to a depth of about 3 inches, and after it has nearly dried it is again gone over so as to fill up all the cracks. A layer of dry earth is then spread over all and firmly trodden down, to render the roof water-tight and bring its surface level with the surrounding ground, following the same method and order of construction that prevails in dwelling-house buildings.
Short timbers are placed across the top of the hatchway wall, one end of which is raised higher than the other, so as to form a slope, and upon these timbers stone slabs are closely laid for a cover. (See [Pl. LXXXVII].) An open space, usually about 2 by 4½ feet, is preserved, and this is the only outlet in the structure, serving at once as doorway, window, and chimney.
The roof being finished, a floor of stone flags is laid; but this is never in a continuous level, for at one end it is raised as a platform some 10 or 12 inches high, extending for about a third of the length of the kiva and terminating in an abrupt step just before coming under the hatchway, as illustrated in the ground plan of the mungkiva of Shupaulovi (Fig. 22, and also in Figs. [25] and [27]). On the edge of the platform rests the foot of a long ladder, which leans against the higher side of the hatchway, and its tapering ends project 10 or 12 feet in the air. Upon this platform the women and other visitors sit when admitted to witness any of the ceremonies observed in the kiva. The main floor in a few of the kivas is composed of roughly hewn planks, but this is a comparatively recent innovation, and is not generally deemed desirable, as the movement of the dancers on the wooden floor shakes the fetiches out of position.
Fig. 22. Ground plan of the chief kiva of Shupaulovi.
On the lower or main floor a shallow pit of varying dimensions, but usually about a foot square, is made for a fireplace, and is located immediately under the opening in the hatchway. The intention in raising the hatchway above the level of the roof and in elevating the ceiling in the middle is to prevent the fire from igniting them. The ordinary fuel used in the kiva is greasewood, and there are always several bundles of the shrub in its green state suspended on pegs driven in the wall of the hatchway directly over the fire. This shrub, when green, smolders and emits a dense, pungent smoke, but when perfectly dry, burns with a bright, sparkling flame.
Across the end of the kiva on the main floor a ledge of masonry is built, usually about 2 feet high and 1 foot wide, which serves as a shelf for the display of fetiches and other paraphernalia during stated observances (see [Fig. 22]). A small, niche-like aperture is made in the middle of this ledge, and is called the katchin kihu (katchina house). During a festival certain masks are placed in it when not in use by the dancers. Some of the kivas have low ledges built along one or both sides for use as seats, and some have none, but all except two or three have the ledge at the end containing the katchina house.
In the main floor of the kiva there is a cavity about a foot deep and 8 or 10 inches across, which is usually covered with a short, thick slab of cottonwood, whose upper surface is level with the floor. Through the middle of this short plank and immediately over the cavity a hole of 2 or 2½ inches in diameter is bored. This hole is tapered, and is accurately fitted with a movable wooden plug, the top of which is flush with the surface of the plank. The plank and cavity usually occupy a position in the main floor near the end of the kiva. This feature is the sipapuh, the place of the gods, and the most sacred portion of the ceremonial chamber. Around this spot the fetiches are set during a festival; it typifies also the first world of the Tusayan genesis and the opening through which the people first emerged. It is frequently so spoken of at the present time.
Other little apertures or niches are constructed in the side walls; they usually open over the main floor of the kiva near the edge of the dais that forms the second level, that upon which the foot of the ladder rests. These are now dedicated to any special purpose, but are used as receptacles for small tools and other ordinary articles. In early days, however, these niches were used exclusively as receptacles for the sacred pipes and tobacco and other smaller paraphernalia.