later claimed the discovery that Espiritu Pampa was the Incan Villabamba. In the same month, American explorer Gene Savoy reached Espiritu Pampa. He discovered that Bingham had only seen a minor part of the ruin at Eremboni Pampa and that the main ruin of Espiritu Pampa was distant. Savoy found 50 or 60 houses and 300 houses at Espiritu Pampa. Savoy concluded that Espiritu Pampa was Vilcabamba, contradicting Bingham. Savoy's 1970 book Antisuyo brought the site to even wider attention. Researcher and author John Hemming also concluded the Espiritu Pampa was Incan Vilcabamba in his 1970 book The Conquest of the Incas. He cited contemporary Spanish and Inca accounts of Vilcabamba as evidence. Titu Cusi Yupanqui said that Vilcambamba had a "warm climate," unlike Vitcos which was in "a cold district." This statement is consistent with the elevation of the two places: for Espiritu Pampa and for Vitcos. Moreover, both the conqueror of Vilcabamba, Hurtado de Abierto, and chronicler Martín de Murúa cited the tropical crops--coca, cotton, and sugar cane—grown near Vilcabamba and that the city lay in a "hot country" unlike most Inca cities. The Inca preferred to live in the high, cool climate of the Andes. Hurtado also described Vilcabamba as being in a valley with "pastures for cattle," unlike Machu Picchu which is on a steep ridge. Finally, Hemming cited Spanish sources indicating that Vilcabamba was northeast of Vitcos—unlike Machu Picchu which is west of Vitcos. Thus, Bingham's claim that Macchu Picchu was Incan Villabamba and other claims that Vitcos was Vilcabamba were discredited. In 1976, Professor Edmundo Guillén and Polish explorers Tony Halik and Elżbieta Dzikowska continued to explore the ruins at Espiritu Pampa. Before the expedition, Guillen visited a museum in Seville where he discovered letters from Spaniards, in which they described the progress of the invasion and what they found in Vilcabamba. Comparison between the letters' contents and the ruins provided additional proof of Espiritu Pampa as the location of Vilcabamba. In 1981, the party of American explorer Gregory Deyermenjian reached and photographed parts of the site, soon thereafter generating a popular article concerning the site and its history. Later extensive archeological work by Vincent Lee, and especially his exhaustive study, his 2000 book Forgotten Vilcabamba, gave further and even more precise confirmation that has made Espíritu Pampa the definitively accepted site of the historical Vilcabamba. On 16 June 2006, a museum in Cuzco