WUPATKI NATIONAL MONUMENT, Ariz. — Before an expanse of grassland and pueblo ruins in northern Arizona was declared a national monument, it was home to hundreds of Navajos whose ancestors returned to settle the area after a forced march to an eastern New Mexico internment camp.

Slowly, the Navajo families left Wupatki National Monument too, either voluntarily or under pressure by the National Park Service, which sought to eliminate private use of the public land it managed. Only one Navajo woman remains.