Who is the main subject in the nonfiction book, The Lost City of Z?

Colonel Fawcett was a larger-than-life English explorer who lived at the turn of the century. Said to be one of the last great Victorian explorers, Fawcett helped map the Peru-Bolivian border and conducted many perilous expeditions into the uncharted Amazon throughout his lifetime. He believed there was a sophisticated ancient society hidden deep in the Amazon, which he called “The City of Z.” Fawcett made it his life's quest to discover “Z” even though his contemporary archaeologists and scientists dismissed the notion such a city could exist in the jungle. Fawcett mysteriously disappeared on his last journey to track down “Z,” along with his son, Jack, and Jack's friend, Raleigh Rimell. Fawcett's disappearance has sparked a century's worth of speculation, begging questions about what happened to him and whether he ever found The Lost City of Z. These questions provide the basis for the entire book.