Manco Inca then retreated to the mountains of Vilcabamba, where he and his successors ruled for another 36 years, sometimes raiding the Spanish or inciting revolts against them.
In 1572 they stormed the Inca stronghold of Vilcabamba, only to find the city deserted, burned, and already stripped of its wealth.
He was a direct descendant of the earlier Túpac Amaru, the last Inca (Emperor) of Vilcabamba, who had been beheaded on the orders of Viceroy Francisco de Toledo in 1572.
He parachuted into the Peruvian Andes with G. Brooks Baekeland (grandson of Leo Baekeland, the inventor of Bakelite) and Peter Lake in search of the lost Inca city of Vilcabamba.
After the murder of his mother in 1539 and his father in 1544, both by the Spaniard conquerors, he became the ruler of the independent Inca state of Vilcabamba.
Don Diego de Castro Titu Cusi Yupanqui (1529–1571) was a son of Manco Inca Yupanqui, and became the Inca ruler of Vilcabamba, the penultimate leader of the neo-Incan state.
As an American historian employed as a lecturer at Yale University, Bingham had been searching for the city of Vilcabamba, the last Inca refuge during the Spanish conquest.
Viceroy Pedro de la Gasca offered to provide Sayri Túpac with lands and houses in Cuzco if he would emerge from the isolated Vilcabamba.