unt ▁( see ▁below ) ▁and ▁sacrifice ▁to ▁Sil van us , ▁while ▁those ▁on ▁the ▁right ▁( ill ustr ated ▁on ▁the ▁right ) ▁show ▁the ▁h unt ▁of ▁a ▁bear ▁and ▁sacrifice ▁to ▁D iana . ▁The ▁head ▁of ▁the ▁em peror ▁( origin ally ▁Had rian ) ▁has ▁been ▁re work ed ▁in ▁all ▁med all ions : ▁on ▁the ▁north ▁side , ▁into ▁Const antine ▁in ▁the ▁hunting ▁scenes ▁and ▁into ▁Lic ini us ▁or ▁Constant ius ▁I ▁in ▁the ▁sacrifice ▁scenes ; ▁on ▁the ▁south ▁side , ▁vice ▁vers a . ▁The ▁relief s , ▁c . ▁ 2 ▁m ▁in ▁diameter , ▁were ▁fr amed ▁in ▁por phy ry ; ▁this ▁fr aming ▁is ▁only ▁ext ant ▁on ▁the ▁right ▁side ▁of ▁the ▁northern ▁fac ade . ▁ ▁Similar ▁med all ions , ▁of ▁Constantin ian ▁origin , ▁are ▁located ▁on ▁the ▁small ▁sides ▁of ▁the ▁arch ; ▁the ▁eastern ▁side ▁shows ▁the ▁Sun ▁rising , ▁on ▁the ▁western ▁side , ▁the ▁Moon . ▁Both ▁are ▁on ▁ch ari ots . ▁ ▁The ▁sp and rel s ▁of ▁the ▁main ▁arch way ▁are ▁decor ated ▁with ▁relief s ▁dep ict ing ▁victory ▁figures ▁with ▁tro ph ies ▁( ill ustr ated ▁below ), ▁those ▁of ▁the ▁smaller ▁arch ways ▁show ▁river ▁gods . ▁Column ▁bases ▁and ▁sp and rel ▁relief s ▁are ▁from ▁the ▁time ▁of ▁Const antine . ▁ ▁Constantin ian ▁fr ie ze ▁▁ ▁The ▁horizontal ▁fr ie ze ▁below ▁the ▁round ▁relief s ▁are