Room 102B is the larger, eastern half of the subdivided 102; it measures 7.3 x 3 m. Thirteen strata were identified. Below the upper were eight strata of San Juan age: two associated with burial features and the other six of structured trash. Room 102B had five features: a post, a posthole, and three burials. It seems likely that the room was built in the 1090-1100 interval.