Great mysteries of archaeology: an ancient Amazonian world revealed from the sky

From the air, you see it only through the constant jolt, tilt and shudder of the low-flying Cessna aircraft. The landscape of the Llanos de Moxos, northern Bolivia, appears as a disconnected patchwork of open grassland savannahs, forest islands and lakes. It feels random, almost unreadable. Only gradually does the pattern resolve itself: raised causeways […]

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