The lithic assemblage also contains hammerstones and cores that were used in the production of other stone tools. The hammerstones are made of various materials, though most are small quartz river cobbles, and exhibit differing amounts of battering along their edges. In addition to battering, possible evidence of other tool functions is displayed on two items. One quartz specimen exhibits two depressions, one on each face, that are similar in nature to those of the nutting stone described above. An igneous hammerstone displays a distinctive smoothed band of grinding along a portion of its edge. This may reflect use as a mano.
Feature 13 contained four large stones, two of which had been altered. One of the rocks had been shaped by rough chipping to a point on one end. The other altered rock is large and flat (c. 10-12 cm thick and 30 cm in diameter) and had been chipped into a circular form. None of the rocks from this feature appear to have been thermally altered.
