Group B is near the centre of the site, roughly equidistant between Group A (to the northeast) and Group C (to the southwest). The main plaza of Group B was at the northern end of the group and was enclosed by the ballcourt on the south side, a double pyramid on the east side and three platforms. A stairway with 28 steps descends the Group B retaining wall behind the northeast corner of the double pyramid, providing an access route towards Group D. On the north side of the group another stairway, with 18 steps divided into two flights, descends towards Group A.