▁combination ▁of ▁those ▁explan ations ▁is ▁correct . ▁ ▁Att ic ▁ ▁On ▁the ▁top ▁of ▁each ▁column , ▁large ▁sculpt ures ▁representing ▁Da ci ans ▁can ▁be ▁seen , ▁which ▁date ▁from ▁Tra jan . ▁A bove ▁the ▁central ▁arch way ▁is ▁the ▁ins cription , ▁forming ▁the ▁most ▁prominent ▁portion ▁of ▁the ▁att ic ▁and ▁is ▁identical ▁on ▁both ▁sides ▁of ▁the ▁arch . ▁Fl ank ing ▁the ▁ins cription ▁on ▁both ▁sides ▁are ▁four ▁pairs ▁of ▁relief ▁pan els ▁above ▁the ▁minor ▁arch ways , ▁eight ▁in ▁total . ▁These ▁were ▁taken ▁from ▁an ▁unknown ▁monument ▁ere cted ▁in ▁honour ▁of ▁Marcus ▁A ure lius . ▁On ▁the ▁north ▁side , ▁from ▁left ▁to ▁right , ▁the ▁pan els ▁dep ict ▁the ▁em peror ' s ▁return ▁to ▁Rome ▁after ▁the ▁campaign ▁( ad vent us ), ▁the ▁em peror ▁leaving ▁the ▁city ▁and ▁sal uted ▁by ▁a ▁person ification ▁of ▁the ▁Via ▁Fl amin ia , ▁the ▁em peror ▁distrib uting ▁money ▁among ▁the ▁people ▁( larg it io ), ▁and ▁the ▁em peror ▁inter rog ating ▁a ▁German ▁prisoner . ▁On ▁the ▁south ▁side , ▁from ▁left ▁to ▁right , ▁are ▁dep icted ▁a ▁captured ▁enemy ▁ch ie ft ain ▁led ▁before ▁the ▁em peror , ▁a ▁similar ▁scene ▁with ▁other ▁prisoners ▁( ill ustr ated ▁below ), ▁the ▁em peror ▁speaking ▁to ▁the ▁troops ▁( ad loc ut io ), ▁and ▁the ▁em peror ▁sacrific ing ▁a ▁p ig , ▁sheep ▁and ▁b ull ▁( su ov