During the summer of 1975, preliminary survey, mapping, and excavations were conducted at the H-CN-12:Rio Claro site, a sizeable Pre-Hispanic village settlement in the Department of Colón, NE Honduras, Central America. Artifactual remains and chronometric determinations indicate that the settlement was inhabited during the Cocal Period (ca. 1000--1530 A.C.). This report describes the location and layout of H-CN-12:Rio Claro, principal excavations, the first regional radiocarbon dates for the Cocal Period, and some of the artifacts and significant findings of the second season of fieldwork in this little-studied region of the Americas. The possibility is raised that the site is the ethnohistorical chiefdom center Papayeca.