Tuff Stuff: Bandalier National Monument, New Mexico

This remarkable heritage site, named for Swiss-born archeologist Adolph Bandalier who was led to the area in the 1800's, was home to the Ancestral Pueblo people who lived here from around 1150 to 1550. Carved in the soft volcano tuff, deposited here some 200,000 years ago following a massive eruption, their cliff dwellings include some remarkably well preserved petroglyphs and masonry walls.