East Profile: Scales are in cm, battleship curve at right indicates proportions of ceramic types by excavated level.
Oritoyacu, Unit 1: (VQ013-179487,9944776). This test was excavated on a small artificial terrace (7x4 m), close to the top of the mountain. The stratigraphy was uncomplicated. The test yielded a majority of Cosanga sherds and only one Bermejo Thick sherd, which appeared in the fourth level of excavation, exactly when the quantity of Cosanga sherds drops. While this is scant evidence, it suggests that Bermejo Thick precedes Cosanga. A charcoal sample collected in the third level of excavation, associated with Cosanga sherds, yielded a radiocarbon date of 1,613 ± 32 A.D. This would correspond to the Colonial Period, which seems plausible as a time when Cosanga pottery could well have been still in use.