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