Communities in Colombia thousands of years ago created an impressive engineering achievement through cooperation among family groups rather than centralized authority, according to a recent study. Archaeologists suggest that current policymakers could draw from this approach to address the nation’s ongoing water management challenges.
The pre-Hispanic field systems in La Mojana, visible from high altitudes, span about 500,000 hectares. These canals and raised fields, active from the early centuries B.C. to the 11th century A.D., match the scale of major landmarks like Grand Canyon National Park.
Prior assumptions held that strong rulers directed such large projects due to their scale and complexity. However, research published in Communications Sustainability by a University of Cambridge team indicates the work was likely organized locally, completed faster than thought, and based on mutual effort.
The findings hold historical value and provide potential lessons for Colombians facing water issues tied to climate shifts, intensive agriculture, and policy shortcomings.
Lead author Dr. Jasmine Vieri noted that the systems’ scale led to beliefs in hierarchical control, yet evidence points to communities managing construction independently in brief periods without external direction.
These societies existed alongside Maya and other Mesoamerican groups but showed no signs of state-level organization. Earlier views, influenced by gold and ceramic artifacts, suggested chiefdoms evolving toward states, but results support a more horizontal structure enabling major accomplishments.
The raised fields handled floodwaters, redirected flow in dry periods, and mitigated droughts while supporting crops and possibly fish capture.
Researchers mapped 500 hectares using satellite data, documenting 1,600 ridges and 63 platforms. Initial heights averaged 1.4 meters. Labor estimates indicate each system could be finished in under two months with a modest workforce drawn from local populations, aided by details on soil, tools, and demographics.
