Mound B probably once served as a platform for the principal chief's house, and the noble who lived there was an extremely important political and religious figure who likely claimed divine relationships with supernatural beings whose powers he could harness. Mound V, the broad, low platform mound nearby, is one of the larger structures at Moundville; recent investigations revealed a sod-covered earth lodge that may have been used as a council house, and other remains indicate that Mound V was part of an upper-class residential compound. Mound B, the site's largest mound, did not assume its final form and size until late in the history of Moundville, sometime after AD 1400. Nearly 60 feet tall, it contains 111,770 cubic yards of dirt, its base covers almost two acres, and its summit slants upward to the west, possibly preserving the eroded remnants of a second level or tier.