The local context of A02-39 is described in Section 6.4.2 and Figure 6-58. Two test units were placed along the perimeter of two separate oval features [A03-557 and A03-559] on the southern portion of A02-39 "Pausa". The Test Units 1 and 2 were essentially sterile. In TU2 non-diagnostic bone and charcoal were found in an ash layer that appeared level to the built-up oval wall just to the east of TU2. Some carbon samples were retrieved from TU2 level 4 (33cm below datum) and the carbon returned a date of 1586BP±35 (AD 400-570), an Early Tiwanaku period date following Stanish's (2003) date of AD 400 for the onset of the Tiwanaku period. This would be an Early Intermediate Period date following the Ica chronology.
Evidence from TU2 (A02-39u2] suggests that this secondary rock oval structure [A03-557] to the south-west of the main Pausa ovals, was perhaps an overflow area. As the test unit was placed at the bottom-most portion of the oval (presumably a corral structure) much of the bone and charcoal that was encountered was perhaps fill that was swept to the lowest point in the corral by animal activity. It appears that during the Early Tiwanaku period the enclosed area was relatively level and charcoal and bone were swept to the bottom of the corral area.