Archaeologists have discovered the ruins of a vast network of settlements hidden beneath the undergrowth of the Bolivian Amazon, in what has been described as the clearest example yet of the complex societies that thrived in a region once held to be pristine wilderness.
The system of monumental centres, towns and villages spans hundreds, if not thousands, of square kilometres of the Llanos de Mojos region, a tropical savannah in the Amazonian basin.
