Inside, they found stone tools, pottery, and other artifacts ... ancestral Puebloans had left the plateau, never to return. Luminarias light Spruce Tree House, an ancient dwelling of the Anasazi ...

Around 1500 B.C., the Anasazi, ancestors of the Pueblo Native Americans, thrived in the Four Corners region. They built intricate pueblos and were skilled in pottery, basket-making, and rock art.