hem ▁Land ▁for ▁cattle ▁gra zing ▁began , ▁when ▁her ds ▁driven ▁over ▁from ▁Queensland ▁were ▁past ured ▁around ▁Florida ▁Station . ▁A ▁violent ▁series ▁of ▁batt les ▁en su ed , ▁resulting ▁in ▁a ▁severe ▁dep op ulation ▁of ▁Y ol gnu ▁in ▁this ▁south - western ▁area ▁of ▁their ▁territory , ▁but ▁the ▁st iff ness ▁of ▁resistance ▁virt ually ▁ended ▁efforts ▁by ▁the ▁intr ud ing ▁bal anda ▁to ▁take ▁over ▁further ▁territory , ▁and ▁efforts ▁at ▁settlement ▁ground ▁to ▁a ▁halt . ▁ ▁Tw enti eth ▁century ▁In ▁the ▁early ▁ 2 0 th ▁century , ▁Y ol gnu ▁or al ▁history ▁rel ates , ▁pun itive ▁exped itions ▁were ▁launched ▁into ▁their ▁territ ories . ▁The ▁first ▁mission ▁to ▁Y ol ng u ▁country ▁was ▁set ▁up ▁at ▁Mil ing im bi ▁Island ▁in ▁ 1 9 2 2 . ▁The ▁island ▁is ▁the ▁traditional ▁home ▁of ▁the ▁Yan - n ha ŋ u . ▁Begin ning ▁in ▁ 1 9 3 2 , ▁over ▁two ▁years , ▁three ▁inc idents ▁of ▁killing ▁out s iders ▁caused ▁problems ▁for ▁the ▁Y ol gnu . ▁ ▁In ▁ 1 9 3 2 ▁some ▁Japanese ▁tre p angers ▁were ▁spe ared ▁by ▁Y ol ŋ u ▁men , ▁in ▁what ▁became ▁known ▁as ▁the ▁C aled on ▁Bay ▁crisis , ▁after ▁their ▁moth ers ▁had ▁been ▁alleg edly ▁ra ped ▁by ▁some ▁Japanese ▁men . ▁Two ▁whites , ▁F agan ▁and ▁T ray nor , ▁were ▁killed ▁near ▁Wood ah