What Happened to the Anasasi?

A thousand years ago, this place was home to a people called the anasasi. At the end of the thirteenth century, they just disappeared. The nabajo didn't wipe them out. But there are stories among the navajo about this place. They studied the petrocliffhs left in the caves up there. There's enough to suggest thata. The anasase had these religious ceremonies that involve torrific rituals like dismemberment, cannibalism, frutal ye.