ate . ▁ ▁The ▁collision ▁between ▁the ▁Arab ian ▁Pl ate ▁and ▁E uras ia ▁is ▁pushing ▁up ▁the ▁Zag ros ▁Mountains ▁of ▁Iran . ▁Because ▁the ▁Arab ian ▁Pl ate ▁and ▁E uras ia ▁plate ▁col lide , ▁many ▁cities ▁are ▁in ▁danger ▁such ▁as ▁those ▁in ▁south ▁eastern ▁Turkey ▁( which ▁is ▁on ▁the ▁Arab ian ▁Pl ate ). ▁These ▁d angers ▁include ▁earth qu akes , ▁t sun am is , ▁and ▁vol cano es . ▁ ▁The ▁earliest ▁human ▁migr ations ▁out ▁of ▁Africa ▁occurred ▁through ▁the ▁Middle ▁East , ▁namely ▁over ▁the ▁Lev antine ▁cor rid or , ▁with ▁the ▁pre - mod ern ▁H omo ▁ere ct us ▁about ▁ 1 . 8 ▁million ▁years ▁B P . ▁One ▁of ▁the ▁potential ▁routes ▁for ▁early ▁human ▁migr ations ▁toward ▁southern ▁and ▁eastern ▁Asia ▁is ▁Iran . ▁ ▁H ap lo group ▁J - P 2 0 9 , ▁the ▁most ▁common ▁human ▁Y - chrom os ome ▁DNA ▁ha p lo group ▁in ▁the ▁Middle ▁East ▁today , ▁is ▁believed ▁to ▁have ▁ar isen ▁in ▁the ▁region ▁ 3 1 , 7 0 0 ± 1 2 , 8 0 0 ▁years ▁ago . ▁The ▁two ▁main ▁current ▁sub groups , ▁J - M 2 6 7 ▁and ▁J - M 1 7 2 , ▁which ▁now ▁compr ise ▁between ▁them ▁almost ▁all ▁of ▁the ▁population ▁of ▁the ▁ha p lo group , ▁are ▁both ▁believed ▁to ▁have ▁ar isen ▁very ▁early , ▁at ▁least ▁ 1