Continuing westward, along the slope of the ridge, cut along its southern base by the Naches River, at a point about one and a quarter miles west of the mouth of the river, a small ravine cuts down from the top of the ridge. This has formed a little flat through the middle of which it has again cut down towards the river. East of this ravine on the flat is a circle of angular rocks such as are found scattered over the ridge. This circle no doubt marks a house site, the interior having been cleared of stone and the circle of rocks probably having been used to hold down the lodge covering.[18] To the west of the ravine, where the flat is somewhat higher than to the east, there are the remains of two semi-subterranean houses. Each of these is represented by a pit surrounded by a ridge of earth, and on the top, are large angular rocks.[19] At a point where the ridge meets this flat, close to the western side of the ravine was a slight depression in a small rock-slide which marked what seemed to be a grave, but which, on excavation, revealed nothing. Still further westward at a point probably two miles above the mouth of the Naches River and overlooking the stream at an altitude of perhaps 250 feet, we found scattered over the ground along the eastern summit of a deep ravine, the first one west of the house sites above mentioned, numerous small chips of material suitable for chipped implements. These became more numerous as we proceeded northward up the eastern side of the ravine for a distance of about a quarter of a mile. Here we came upon the small quarry in the volcanic soil, shown in Fig. 1, Plate III. Immediately to the west of the pit was a pile of earth, apparently excavated from it. [18] See p. 15 and Fig. 1, Plate IV. [19] See p. 52 and Fig. 2, Plate IV. On the top of this heap of soil and among the broken rock to the south and east of it, were found several water-worn pebbles, used as hammers in breaking up the rock, as indicated by the battered condition of their ends (p. 58). We saw no other water-worn pebbles on the surface of the ridge, but they were numerous in the gravel of the bottom-lands subject to the overflow of the rivers. It would seem that these pebbles were brought up from the river below for use as hammers. Scattered to the south of the pit were found large fragments of float quartz material containing small pieces of stone suitable for chipped implements but made up mainly of stone which was badly disintegrated. Lying on the slope of the ravine were many small fragments of this same stone which were clear of flaws.