. ▁The ▁tomb s ▁at ▁Na q sh - e ▁R ust am , ▁Iran , ▁made ▁in ▁the ▁ 5 th ▁century ▁BC , ▁are ▁car ved ▁into ▁the ▁cl iff side ▁in ▁the ▁shape ▁of ▁a ▁cross . ▁ ▁They ▁are ▁known ▁as ▁the ▁" Pers ian ▁cross es ". ▁ ▁Cross - nd j ▁( h ier og lyph ) ▁ ▁Cross ▁cap ▁- top ological ▁surface ▁ ▁Cross ro ads ▁( my th ology ) ▁ ▁Cross bu ck ▁ ▁References ▁▁ ▁Che val ier , ▁Jean ▁( 1 9 9 7 ). ▁The ▁P engu in ▁Dictionary ▁of ▁Symbol s . ▁P engu in ▁. ▁ ▁Dr ury , ▁Nev ill ▁( 1 9 8 5 ). ▁Dictionary ▁of ▁Myst ic ism ▁and ▁the ▁Occ ult . ▁Har per ▁& ▁Row . ▁. ▁ ▁Koch , ▁Rudolf ▁( 1 9 5 5 ). ▁The ▁Book ▁of ▁Sign s . ▁D over , ▁NY . ▁. ▁ ▁Web ber , ▁F . ▁R . ▁( 1 9 2 7 , ▁rev . ▁ 1 9 3 8 ). ▁Church ▁Symbol ism : ▁an ▁explanation ▁of ▁the ▁more ▁important ▁symbols ▁of ▁the ▁Old ▁and ▁New ▁Testament , ▁the ▁primitive , ▁the ▁media eval ▁and ▁the ▁modern ▁church ' '. ▁Cleveland , ▁O H . ▁. ▁ ▁External ▁links ▁▁ ▁Se iy aku . com , ▁all ▁Cross es ▁- ▁probably ▁the ▁largest ▁collection ▁on ▁the ▁Internet ▁ ▁Vari ations ▁of ▁Cross es ▁- ▁Im ages ▁and ▁Mean ings ▁ ▁Cross