Since 1997, students from the Department of Anthropology of University of Montreal have been actively participating in the excavations of a pre-columbian site called Cerro Juan Diaz, located on the Azuerro Peninsula in Panama. Recent excavations have revealed an important concentration of La Mula ceramics, an important ceramic style which may represent the first polychrome ceramics in all the Grand Cocle region. Analysis of these new data will be very usefull to understand this poorly known ceramic tradition.