Showing vaulted passageway with 2 columns fallen on ground, before they were replaced as part of later 20th century  restoration; cf. photo at right.
1936 photograph in the Spinden Collection, Heffenreffer Museum,  SP.15-71T. Scanned from 35mm slides taken from a high quality internegative. Reproduced Courtesy of the Heffenreffer Museum of Anthropology, Brown University