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Amazon & LiDAR lost cities
This is the clearest example of field evidence running ahead of the conventional view. For decades the Amazon was taught as a 'counterfeit paradise' (Betty Meggers' 1971 phrase) that could not support complex societies. LiDAR and excavation have since revealed planned settlements, causeways and platform mounds dating back to about 500 BCE, and a 2023 model suggests more than 10,000 earthworks are still hidden.
Claims in this section
| Claim | Status | Verdict |
|---|---|---|
| The pre-Columbian Amazon held large, organised societies, not just small bands Before 1492 the Amazon basin supported large, settled societies that built roads, causeways, platform mounds and towns and reshaped the forest. | Mainstream | Supported by LiDAR and excavation |
| Upano Valley, Ecuador: the oldest known urban network in the Amazon LiDAR shows a regional network of platform towns and roads in Ecuador's Upano Valley, built from about 500 BCE, centuries earlier than other known Amazonian... | Mainstream | Measured: from about 500 BCE |
| LiDAR shows Maya lowlands were far more densely settled than thought Airborne LiDAR has revealed tens of thousands of previously unmapped Maya structures, causeways and fields, including whole cities such as Valeriana (2024). | Mainstream | Measured: far denser settlement than mapped before |
| More than 10,000 earthworks are still hidden under the Amazon canopy Thousands of pre-Columbian earthworks remain undiscovered across Amazonia, most of them in the southwest. | Contested | Model estimate: 10,272–23,648 sites still undiscovered |
Sites in this section
Upano Valley settlements · Casarabe culture sites (Cotoca and Landívar) · Upper Xingu settlements (including Kuhikugu) · Valeriana
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