He decided to sweep the earth of the people he had made. [] He needed an army and for this purpose he went underground and brought up the Papagos. [] They live in a land scattered with imposing ruins which belonged... to the Hohokum, "the people who are gone".
He chose to eradicate humanity, so he created an army and recruited the Papagos. They inhabit a land dotted with massive ruins that once belonged to the Hohokum, 'the vanished people'.