Dating websites based on astrological signs
Some seekers called it El Dorado, others the City of Z.
But the jungle swallowed them and nothing was found, prompting the rest of the world to call it a myth.
Now, however, the doomed dreamers have been proved right: there was a great civilisation.
Fawcett led an expedition to find the City of Z but the party vanished, bequeathing a mystery.
Many scientists saw the jungle as too harsh to sustain anything but small nomadic tribes.
"So it was odd to have a culture that would take advantage of different ecosystems and expand over such a large region." The first geometric shapes were spotted in 1999 but it is only now, as satellite imagery and felling reveal sites, that the scale of the settlements is becoming clear.
Some anthropologists say the feat, requiring sophisticated engineering, canals and roads, rivals Egypt's pyramids.