 Comprising at least two stories and 160 rooms, it shares an arc or D-shaped design with its contemporaries, Peñasco Blanco and Pueblo Bonito, but has a unique "dog leg" addition made necessary by topography.It is located in one of the canyon's major side drainages, near Gallo Wash, and was massively expanded after 930 AD.The site is surrounded by rock art and petroglyphs that depict human figures, solar signs, and geometric forms.