A revolutionary airborne LiDAR system known as 'Sky-Scanner' has penetrated dense vegetation and sediment to reveal a massive, previously unknown urban complex in the Mississippi River Delta. The site, dating to approximately 1000 BCE, features over 40 earthen mounds arranged in a sophisticated geometric pattern that suggests an early knowledge of solar alignments.
The discovery challenges long-held theories about the scale of early Poverty Point-era societies in North America. The digital map shows a series of artificial canals and raised causeways connecting the mounds, indicating a highly organized society capable of large-scale hydraulic engineering in a swampy environment long before the rise of the Mississippian culture.