▁a ▁central ▁arch ▁and ▁two ▁later al ▁arch es , ▁the ▁latter ▁being ▁sur mount ed ▁by ▁two ▁round ▁relief s ▁over ▁a ▁horizontal ▁fr ie ze . ▁The ▁four ▁columns ▁are ▁of ▁Cor inth ian ▁order ▁made ▁of ▁Num id ian ▁yellow ▁mar ble ▁( g ial lo ▁ant ico ), ▁one ▁of ▁which ▁has ▁been ▁transferred ▁into ▁the ▁Bas il ica ▁di ▁San ▁Giovanni ▁in ▁Later ano ▁and ▁was ▁replaced ▁by ▁a ▁white ▁mar ble ▁column . ▁The ▁columns ▁stand ▁on ▁bases ▁( pl inth s ▁or ▁soc les ), ▁decor ated ▁on ▁three ▁sides . ▁The ▁relief s ▁on ▁the ▁front ▁show ▁Victoria , ▁either ▁ins cri bing ▁a ▁shield ▁or ▁holding ▁pal m ▁branches , ▁while ▁those ▁to ▁the ▁side ▁show ▁captured ▁bar b ari ans ▁alone ▁or ▁with ▁Roman ▁soldiers . ▁Though ▁Constantin ian , ▁they ▁are ▁model led ▁on ▁those ▁of ▁the ▁Arch ▁of ▁Sept im ius ▁Sever us ▁( and ▁the ▁destroyed ▁Ar cus ▁nov us ), ▁and ▁may ▁be ▁considered ▁as ▁a ▁" standard " ▁item . ▁ ▁The ▁pairs ▁of ▁round ▁relief s ▁above ▁each ▁later al ▁arch way ▁date ▁to ▁the ▁times ▁of ▁Emperor ▁Had rian . ▁They ▁display ▁scenes ▁of ▁hunting ▁and ▁sacrific ing : ▁( n orth ▁side , ▁left ▁to ▁right ) ▁h unt ▁of ▁a ▁bo ar , ▁sacrifice ▁to ▁Apol lo , ▁h unt ▁of ▁a ▁l ion , ▁sacrifice ▁to ▁Her cules . ▁On ▁the ▁south ▁side , ▁the ▁left ▁pair ▁show ▁the ▁departure ▁for ▁the ▁h