az um al ▁group ▁and ▁domin ates ▁the ▁complex . ▁The ▁py ram id ▁under w ent ▁various ▁phases ▁of ▁construction ▁through ▁the ▁Classic ▁and ▁Early ▁Post class ic ▁periods . ▁Str ucture ▁B 1 - 1 ▁was ▁built ▁upon ▁a ▁bas al ▁platform , ▁called ▁the ▁Great ▁Platform ▁by ▁Bog gs , ▁that ▁measures ▁ ▁( east - west ▁by ▁north - s outh ). ▁The ▁py ram id ▁was ▁survey ed ▁in ▁ 2 0 0 3 – 2 0 0 4 . ▁A ▁ ▁long ▁platform ▁runs ▁north - s outh ▁along ▁the ▁western ▁fac ade ▁of ▁the ▁py ram id ▁and ▁a ▁platform ▁of ▁similar ▁length ▁runs ▁east - west ▁along ▁the ▁north ▁side ▁of ▁the ▁structure . ▁These ▁two ▁side ▁platforms ▁were ▁originally ▁built ▁as ▁separate ▁structures ▁but ▁were ▁later ▁incorpor ated ▁into ▁the ▁Great ▁Platform ; ▁it ▁is ▁pres umed ▁by ▁investig ators ▁that ▁the ▁temple ▁was ▁radial ly ▁symmet rical ▁and ▁that ▁further ▁platforms ▁existed ▁on ▁the ▁east ▁and ▁south ▁sides . ▁The ▁remains ▁of ▁a ▁platform ▁meas uring ▁ ▁were ▁found ▁in ▁roughly ▁the ▁correct ▁position ▁for ▁such ▁a ▁platform ▁on ▁the ▁east ▁side . ▁A ▁test ▁pit ▁s unk ▁into ▁the ▁pres umed ▁area ▁of ▁the ▁southern ▁platform ▁un cover ed ▁an ▁offering ▁containing ▁a ▁cyl ind rical ▁cer am ic ▁vessel ▁with ▁a ▁pol ych rome ▁bow l ▁placed ▁upon ▁it ▁like ▁a ▁lid . ▁Within ▁the ▁vessel ▁were ▁two ▁larger ▁pieces ▁of ▁j ade ▁and ▁ 5 0 ▁smaller ▁j ade ▁fragments