It is during the Late Chiripa phase that we have the first evidence for the occupation of the island of Sikuya. This earliest site on the island, Sikuya Oeste, is heavily disturbed by modern habitation. It lies directly underneath the modern town. There is no discernible surface indication of any sort of platform or corporate architecture. However, any such traces would almost certainly have been erased by the very intensive Late Horizon, Colonial, Republican and modern occupations of the site. Also, it was impossible to obtain good surface collection from the site. It is therefore impossible for me to rule out the possibility of an Early or Middle Chiripa occupation that I overlooked.
For the same reason, I am not overly confident of my estimate of the size of any of the various occupations. Nevertheless, I estimate Sector A's size at 3.0 ha. It is a second-tier Late Chiripa phase site.
It should be noted that during the entire Early and Middle Formative Periods Sikuya was not, in fact, an island (see Figures 6.7 and 6.8). This site was, rather, another lakeshore settlement, very like Chiripa and other contemporary sites.