No bosses, no problem! Pre-Hispanic farmers built giant water system bottom-up, archaeologists reveal

No bosses, no problem! Pre-Hispanic farmers built giant water system bottom-up, archaeologists reveal Tom Almeroth-W… Tue, 08/11/2026 - 10:01 The pre-Hispanic field systems of La Mojana in the Colombian Caribbean are so vast you can see them from a plane at high altitude. Their canals and raised fields – in use from the first centuries BC until the 11th century AD – cover an astonishing 500,000 hectares, roughly the same size as the Grand Canyon National Park, or three times the size of London.