The emergence of monumentality in the Maya lowlands has been linked to political complexity. But how did the emergence of these monuments relate to changing human-environment interactions? Here, the author proposes that Maya monumentality embodies traditional ecological knowledge, or TEK. Taking the example of Tzacauil, the gathering of fieldstone for the preparation of land for cultivation is connected to agricultural intensification and the florescence of monumentality in the Late and Terminal Formative period (300 BC-AD 250). Exploration of the relationships between monumental traditions and localised TEK practices may illuminate the entanglement of complexity, subsistence and human-environment interactions in other parts of the world.