The Amazon is one of the planet’s last great wildernesses, but legends have circulated that lost cities existed deep within the forests for centuries. A search for El Dorado, a supposed city of gold, lured many Spanish explorers far off the map, and some of them never returned. As recently as the 20th century, British explorer Percy Fawcett searched for what he believed was the Lost City of Z. He vanished into the jungle and added his unfinished chapter to a tale that began 600 years ago.

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