 The consistent lack of artifacts and features in excavated Chacoan rooms suggests they were used primarily for grain storage, but because their combined areas appear to exceed what would reasonably have been needed for foodstuffs – a large crop of corn from all the arable land near Chaco would fit into two rows of rooms at Chetro Ketl – this interpretation lacks support amongst archeologists.Because so many of these rooms are featureless interior spaces that lie below several stories, the scale of their construction may have been motivated by what architects call "massing"; building structures with the primary intention of impressing onlookers.The rooms of Chetro Ketl may have served as storage space for ritual objects, and the great house may have been occupied primarily by groups of priests, also housing pilgrims during community events, when the population of the canyon increased dramatically.