On top of the wall stood a graceful olla, or vase-shaped jar of pottery, strikingly ornamented with red and black. About the neck was a short, twisted rope of yucca fiber, long enough to let the jar down to the water. The boys dropped it down and brought it up full, holding it carefully that it might not strike the side of the wall. “Bah,” said Wiki, tasting it, “it is too warm to drink, now that the sun is on it. I would rather have gone to the spring.” “Come, then,” cried Kwasa, jumping down from the wall. “If we go to the spring perhaps we may see something of the hunters. It is time they were returning, my grandmother says.” Kwasa told the truth when he said it was a long way to the spring. For the great rock-built house, or rather cluster of houses, in whose inner court the boys had been playing, was placed three hundred feet from the bottom of a canyon in a huge cavern which Nature had left in the face of the precipitous cliff. Along the outer edge of the cavern, following the outline of the opening, was a high wall of masonry pierced with numerous openings that served as doors and windows. So exactly had the builders matched the color of the rocky cliff face, and so skilfully was the great structure placed in its lofty niche, that a traveler in the canyon below could hardly have told it was there at all. This outer wall was in some places four stories high. Back of it the building was terraced down to the floor of the cave, each story projecting beyond the one above it so that its roof made a sort of porch for the upper rooms. Rude ladders were everywhere, leading from each story to the next, for the people who lived in this peculiar dwelling liked to go up and down from the outside. Each story was divided into many rooms, most of them rather small, but several near the center of the structure being of good size. In some of these were stone fireplaces for cooking, and one, larger than any of the others, was set apart for ceremonial use. Back of the great house, or rather village, for it was the home of many families, was a long and narrow court running well back under the sheltering slope of the cavern roof. Here the children could play and the women could weave and grind and make pottery and mats in well-guarded safety, for back of them and overhead rose the mighty arch of the cavern, and between them and the cliff’s edge stood the solid sandstone structure.