What is the main reason the people left the cliff palace?

The main reason the people left Cliff Palace, located in Mesa Verde, is believed to be a combination of prolonged drought and resource depletion. These environmental challenges likely made it difficult to sustain agriculture and secure water sources. Additionally, social factors, such as conflicts or the search for new opportunities, may have contributed to their decision to abandon the settlement. Ultimately, these factors led to the migration of the Ancestral Puebloans to more favorable locations.