"The Lost City of Z" is a book written by David Grann, published in 2009, which tells the true story of Percy Fawcett, a British explorer who ventured into the Amazon rainforest in the early 20th century in search of a legendary city he called "Z." Fawcett believed that the city, which he thought was the remains of an ancient civilization, was located deep in the unexplored jungle of Brazil.

Fawcett made several trips to the Amazon, but his last expedition in 1925, along with his son Jack and a friend named Raleigh Rimell, was the one that captured the world's attention. The three men disappeared without a trace, and their fate became one of the greatest mysteries of the 20th century. Many people, including other explorers, journalists, and the British government, attempted to find out what happened to Fawcett and his companions, but no one could uncover the truth.

David Grann, a staff writer for The New Yorker, became obsessed with Fawcett's story and decided to retrace his footsteps in the Amazon. Grann's book is a combination of historical research, personal narrative, and adventure writing. It follows Grann as he travels to Brazil and meets with modern-day explorers, archaeologists, and indigenous people who still live in the region. Grann's journey takes him through treacherous rivers, dense jungles, and dangerous wildlife as he tries to uncover the secrets of Fawcett's last expedition.

Along the way, Grann explores the history of the Amazon and the many myths and legends that have surrounded it for centuries. He also examines the impact that European colonization had on the indigenous people of the region, as well as the ongoing struggle for their rights and preservation of their culture.

"The Lost City of Z" is a fascinating read that combines history, adventure, and mystery. It sheds light on a lesser-known chapter in the history of exploration and the human fascination with the unknown.