After the work of Lothrop and Stone, research in the area took a hiatus for nearly fifty years. In the 1990s, Claude Baudez and a team of researchers set out to establish a ceramic chronology of the region by observing the change in ceramic styles over time.[11] This was accomplished by examining the drainage ditches that were cut into the landscape by the UFCO. Research carried out by Ifigenia Quintanilla, under the direction of the MNCR from 1991–1996 was performed in the region under the project titled "Man and Environment in Sierpe-Terraba" focusing on settlement patterns, occupational sequences, and resources utilized in the region.[12]