Archaeologists discover 4,000-year-old canals used to fish by predecessors of ancient Maya

Using drones and Google Earth imagery, archaeologists have discovered a 4,000-year-old network of earthen canals in what’s now Belize. The research published Friday in Science Advances shows that long before the ancient Maya built temples, their predecessors were already altering the landscape of Central America’s Yucatan peninsula…
Source : Chron