Once a year, Luminary Night is hosted by the Mesa Verde Foundation. Luminaries have a presence along paths and roads. Smokeless lights illuminate Spruce Tree House. Spruce Tree House is one of the ancient dwellings in Mesa Verde National Park. Constructed in a cliff alcove with multi-roomed, multistoried houses, towers and kivas. These types of dwellings were home to the Ancestral Puebloans in 1200 - 1280 A.D. It is estimated that The First People to the Mesa Verde region came in about 2200 B.C. The First Ancestral Puebloans arrived sometime around 500 - 600 A.D. Poles come through the small square which is a ladder leading to the underground kiva. "The Great Kiva", at Lowry Pueblo Ruins is featured in My "Winter Black and White Assignment" in my gallery here.