This rockshelter site is located approximately 1 km from Casita de Piedra rockshelter on the west side of the Rio Chiriqui canyon. Anthony Ranere excavated the site in 1971, discovering both ceramic and preceramic period occupations in the approximately 1.2 m of deposits (Dickau et al. 2007:3651). Two choppers were found in the preceramic levels of the site that yielded maize starch grains. The preceramic deposits are dated with four radiocarbon dates on associated charcoal. One of the stone choppers (No. 147/10) from layer C1 is associated with a dated charcoal sample (SI-1847--see sample page). Another chopper (No. 153/1) comes from the stratigraphically earlier layer D2, that has no associated radiocarbon date. Dickau et al. (2007:Table 1) estimate the age of this sample at ca. 4900 cal BP.
| ID | Other ID | Type | Subtype | Uncal BP (years) | ± 1 σ (years) | Median cal BP (years) | Lower cal BP (years) | Upper cal BP (years) | δ13C | Contaminated? |
|---|---|---|---|---|---|---|---|---|---|---|
| 460 | SI-1847 | MicroSample | 3870 | 75 | 4291 | 4517 | 4085 | No |