To understand Middle Preclassic social processes at Cahal Pech, we must consider the dynamic and complex record of architectural development in its entirety.

The development of Middle Preclassic (900–300 BC) ceremonial architecture is receiving more attention by archaeologists conducting research in the Maya Lowlands. Although a few examples have been partially excavated, there is still a dearth of information on how and why monumental constructions were originally built. This is largely because early structures often lie below several layers of sequential architecture, making them difficult to locate. Even when Middle Preclassic architecture is identified, exposure is often too limited to fully investigate its form and function. A well-preserved and accessible Middle Preclassic platform would be a rare find and could greatly enhance our knowledge and understanding of the subject. At Pacbitun, Cayo District, Belize, such a discovery has been made beneath the artificially raised surface of the main plaza. To make the most of this opportunity, five seasons of excavation worked to expose this massive building in its entirety. In this article, we provide details concerning the structural design of the platform and its abandonment, as well as present potential architectural comparisons. We conclude by reevaluating complexity at Pacbitun.

Beside one of the earliest Preclassic pyramids in Guatemala the authors discovered a large basin fashioned in clay and shaped like a quatrefoil. The use of the quatrefoil theme on other carvings reveals its association with water and its symbolic role as the mouth of an underworld. Excavations in an adjacent mound exposed an affluent community, rich in figurines. This juxtaposition of monuments and residence at La Blanca shows a society of 900-600 BC in which ritual and the secular power were well integrated.

The recovery of animal and plant remains from the site of Cahal Pech provides data on early diet and subsistence practices in the Belize Valley region of the Maya lowlands. Analysis of the material remains suggests that the Middle Preclassic Maya were practising a mixed subsistence economy relying on agricultural foodstuffs, local terrestrial game species, freshwater fish and shellfish and marine reef fishes. Isotopic analysis of human bone is used to aid in the reconstruction of actual food consumption.