Bandelier National Monument’s human history extends back for over 10,000 years when nomadic hunter-gatherers followed migrating wildlife across the mesas and canyons of New Mexico. Between 1150 and 1550 CE, Ancestral Pueblo erected permanent settlements whose remains give us clues about their lives and culture. Built along the base of a cliff, the homes at Long House stood three to four stories high. The cliff face and remaining structures are decorated with hundreds of petroglyphs showing a variety of subjects. A visit here is like traveling back in time. Photo by Sally King, National Park Service.