This article reports on the excavation of a “berm”—an earthen mound that surrounds the Bluff Great House in southeastern Utah. Comparisons are made to Chacoan-era (A.D. 850–1150) great house mounds in Chaco Canyon and to other berms and mounds at great houses throughout the Chacoan region. Great house mounds in Chaco Canyon and berms outside Chaco Canyon are assumed to have been ritual architecture, and continuity in the use of mounded earth and trash as a sacred place of deposit is traced through time from the Pueblo 1 period to modern Pueblos. The Bluff berm does not seem to have been constructed as the result of ceremonial gatherings (as has been suggested for the great house mounds in Chaco Canyon), but there is intriguing evidence that it continued to be used into the post-Chacoan era (A.D. 1150–1300), perhaps as a result of a restructuring or revival of Chacoan ideas in the northern San Juan region. Examination of the spatial distribution of berms suggests that they are most common at great houses south and west of Chaco Canyon; the northern San Juan region, where Bluff is located, has far fewer such features, possibly because the revival of Chacoan ideas in this region was short-lived.
