Platform A6 encloses the western extreme of the Group A plaza. The platform has two levels, the upper of which has a vertical cornice. The platform faces east onto the plaza; access was via two stairways flanked by balustrades terminating in vertical cornices. Platform A6 was built over an older version of the same building; this earlier construction phase was smaller and its stairways were destroyed in order to build the stairways of the final version. During restoration work carried out by archaeologists the back wall and a section of the facade were left exposed. Four funerary urns were found associated with the platform, mostly interred under the front of the building.