As with the Puma 2 [A03-229] site higher in the valley, this site consists of a small shelter on the edge of a lava flow with improvements through the construction of rock walls.

Table 6-22. Lithic artifacts from site A03-777 excluding 1 Series 5 projectile point.

Two patterns emerge from the lithic materials encountered at this site. First, the Pastoral period signature is weak as there is only one Series 5 point (and it was completely flaked, Ob1 material). The Archaic Foragers points are all Middle Archaic and they were made of volcanics and chert, not obsidian. A second notable pattern about these lithics is that it appears that there was reduction of primarily Ob2 obsidian at the site based on cores left at the site. These cores were not exhausted, one weighed 47 g and measured 4.5 x 4.1 cm. This is consistent with the evaluations of Ob2 obsidian more generally, in that it is used because it is widely available, yet there appears to have been a preference for Ob1 material and, in particular, for projectile point manufacture. This site is only 3 km from the exposures of surface gravels of Ob2 obsidian on the south-east flanks of Hornillo, but over 6 km from the Maymeja zone with the Ob1 material.