On the north slope of Yakima Ridge, near its base, at a point where the Moxee Canal and the river road turn and run west along the base of the ridge or about southeast of the largest ranch there, possibly two miles northeasterly from the Gap, were a number of scattered graves covered with rock-slide material. About one quarter of a mile west from here, a little west of south of the ranch, was a large rock-slide, covering a short northerly spur of the ridge. This is shown from the southwest in Plate VII. It is about three quarters of a mile northeast from where the Yakima River, after flowing through bottom lands, strikes the base of the Yakima Ridge. In this slide were a large number of shallow parallel nearly horizontal ditches below each of which is a low ridge or terrace of the angular slide-rock. Among these terraces, as shown in Fig. 2 of the plate, were a few pits surrounded by a low ridge, made up of jagged slide-rock, apparently from out of the pits. It was naturally larger at the side of the pit towards the bottom of the slide. In none of these did we find human remains or specimens. Some of them are larger than similar pits that we found to be rock-slide graves. Their close resemblance to graves found to have been disturbed, part of their remains being scattered near by and to other graves, as they appeared after our excavations, suggests that these pits are the remains of such rock-slide graves from which the bodies have been removed by the Indians possibly since the land became the property of the United States Government. On the other hand, these pits remind us of rifle pits, though it does not seem probable that they would be built in such a place for that purpose and there is no local account of the site having been used for such pits. This rock-slide is particularly interesting because of the terraces into which most of its surface had been formed. The character of the rock-slide material is such that one may walk over these for some little time without noticing them, but once having been noticed, they always force themselves upon the attention. Standing near the top of the slide, they remind one of rows of seats in a theatre. Each terrace begins at the edge of the slide and runs horizontally out around its convex surface to the opposite side. Some of them are wider than others. They resemble the more or less horizontal and parallel terraces formed by horses and cattle while feeding on steep slopes. The Yakima Ridge has been so terraced by stock in many places and over large areas. However, there is no vegetation on the rock-slide to entice stock and the difficulty of walking over the cruelly sharp rocks as well as the presence of rattlesnakes would seem sufficient to cause both cattle and horses to pass either below or above it. The outer edge of each terrace is probably little lower than the inner edge, but viewed from the slope it seems so, and this suggests that these terraces may have