Room 3A measures 2.9 x 2.4 m and is the southern half of the divided room (7W). Five strata were defined for 3A including three of San Juan affiliation and two fill strata dating after the San Juan occupation. Most strata showed evidence of disturbance, most likely from pot hunters. Two features were identified in the room, including a doorway leading into Room 7A and a section of collapsed first-floor roof. The room burned at some point during the San Juan occupation, the floor was resurfaced, and the room used again.