The Garcilaso mentioned by Markham is the chronicler Garcilaso Inca de la Vega, the son of a Spanish conquistador and an Inca princess, a heritage that gave him unique access to genuine Inca traditions, particularly since he was born and brought up in Cuzco and spoke Quechua, the language of the Incas, as his mother tongue. Had the megalithic elements of Sacsayhuaman been recent work, done in the century before Garcilaso's birth, there should have been fresh and clear memories, even eye-witness accounts, of so magnificent an achievement. But Garcilaso reports nothing of the sort and instead can only offer magic as an explanation for what he describes as 'an ever greater enigma than the seven wonders of the world.