 To the north of this platform is another one of smaller dimensions (300 by 180 meters) oriented east-west, also limited on its larger sides by tall staggered walls 10 meters wide that form a 223 by 147 meters plaza.This plaza has two rectangular structures, also facing east, seated on a common 87 by 37.5 meters platform.Between 1937 and 1938, Caso and Acosta performed excavations, release and consolidation works of the base rectangular structures took place.