▁then ▁many ▁feet ▁of ▁earth . ▁ ▁Five ▁formal ▁tomb s ▁were ▁discovered ▁within ▁Complex ▁A , ▁one ▁with ▁a ▁sand stone ▁s arc oph ag us ▁car ved ▁with ▁what ▁seemed ▁to ▁be ▁an ▁cro cod ilian ▁earth ▁mon ster . ▁Die hl ▁states ▁that ▁these ▁tomb s ▁" are ▁so ▁elaborate ▁and ▁so ▁integrated ▁to ▁the ▁architecture ▁that ▁it ▁seems ▁clear ▁that ▁Complex ▁A ▁really ▁was ▁a ▁mort u ary ▁complex ▁dedicated ▁to ▁the ▁spirits ▁of ▁dece ased ▁r ul ers ". ▁ ▁Other ▁notable ▁artifact s ▁within ▁Complex ▁A ▁include : ▁ ▁Monument ▁ 1 9 . ▁This ▁relief ▁sculpt ure ▁is ▁the ▁earliest ▁known ▁example ▁of ▁the ▁fe ather ed ▁ser pent ▁in ▁Mes o amer ica . ▁ ▁Of fer ing ▁ 4 . ▁ ▁Complex ▁B ▁South ▁of ▁the ▁Great ▁Py ram id ▁lies ▁Complex ▁B . ▁Where as ▁Complex ▁A ▁was ▁apparently ▁restricted ▁to ▁the ▁el ite , ▁the ▁pla za ▁of ▁Complex ▁B ▁seems ▁to ▁be ▁built ▁specifically ▁for ▁large ▁public ▁gather ings . ▁This ▁pla za ▁is ▁just ▁south ▁of ▁the ▁Great ▁Py ram id , ▁east ▁of ▁the ▁Complex ▁B ▁platforms , ▁and ▁west ▁of ▁the ▁huge ▁raised ▁platform ▁referred ▁to ▁as ▁the ▁St ir ling ▁Ac ropol is . ▁This ▁pla za ▁is ▁nearly ▁ ▁long ▁and ▁over ▁ ▁wide . ▁A ▁small ▁platform ▁is ▁situated ▁in ▁the ▁center ▁of ▁the ▁pla za . ▁ ▁This ▁layout ▁has ▁led ▁research ers ▁to ▁propose ▁that ▁the ▁platforms ▁surrounding ▁the ▁pla za ▁function ed