Kala Uyuni is a very large site located in the community of Coa Kkollu. It occupies the flanks of Cerro Achachi Coa Kkollu. The sherd scatter covers 15.25 ha between the modern road (immediately to the south) and the flanks of the hills to the north. An active spring is located at the base of the hill behind the site. There are a considerable number of worked stones present on the site, most incorporated into modern agricultural rockpiles. The site topography would seem to indicate some kind of platform/terrace complex in approximately the center of the site and backing up against the hill. This may be a two-tiered stepped platform, but it is impossible to define architecture with any confidence based on the existing surface remains. A detailed topographical map and test excavations would be required. This is a priority for future research on the peninsula. No stone sculpture of any kind was observed or reported by the local landowners.
The principal occupation of this site is in the Late Formative 1 period. However, its first occupation was in the Middle Chiripa phase. Sector A covers 2.5 ha and has a population index value of 127. The Middle Chiripa occupation is probably deeply buried by later deposits here, and is visible only as a thin sherd scatter on the surface.