Relier Pairs DiscoveriesVersion en ligne Speaking activity par Heydi Porras 1 2 3 4 5 The “lost city” of Petra Tutankhamun’s tomb Starting in 2005, scientists spent eight years researching the features of a 1.8-million-year-old skull. The statues are known as Moai, and are an impressive tribute to the Rapa Nui people. Explorer Hiram Bingham rediscovered the “lost” Inca citadel of Machu Picchu in Peru in 1911.