9 1 2 . ▁It ▁extended ▁the ▁C CE & HR ▁line ▁from ▁its ▁termin us ▁at ▁Gold ers ▁Green ▁to ▁Ed g ware ▁in ▁two ▁stages : ▁to ▁Hend on ▁Central ▁in ▁ 1 9 2 3 ▁and ▁to ▁Ed g ware ▁in ▁ 1 9 2 4 . ▁The ▁line ▁crossed ▁open ▁coun tr ys ide ▁and ▁ran ▁on ▁the ▁surface , ▁apart ▁from ▁a ▁short ▁tunnel ▁north ▁of ▁Hend on ▁Central . ▁Five ▁new ▁stations ▁were ▁built ▁to ▁pav il ion - style ▁designs ▁by ▁Stanley ▁He aps , ▁head ▁of ▁the ▁Under ground ' s ▁Arch itect s ▁Office , ▁stim ulating ▁the ▁rapid ▁north ward ▁expansion ▁of ▁sub urban ▁develop ments ▁in ▁the ▁following ▁years . ▁ ▁M orden ▁Ext ension ▁The ▁engineering ▁of ▁the ▁M orden ▁extension ▁of ▁the ▁C & SL R ▁from ▁Cla ph am ▁Common ▁to ▁M orden ▁was ▁more ▁demand ing , ▁running ▁in ▁t unn els ▁to ▁a ▁point ▁just ▁north ▁of ▁M orden ▁station , ▁which ▁was ▁constructed ▁in ▁a ▁cutting . ▁The ▁line ▁then ▁runs ▁under ▁the ▁wide ▁station ▁forec ourt ▁and ▁public ▁road ▁outside ▁the ▁station , ▁to ▁the ▁dep ot . ▁The ▁extension ▁was ▁initially ▁planned ▁to ▁continue ▁to ▁S utton ▁over ▁part ▁of ▁the ▁route ▁for ▁the ▁un built ▁W im ble don ▁and ▁S utton ▁Railway , ▁in ▁which ▁the ▁U ER L ▁held ▁a ▁st ake , ▁but ▁agre ements ▁were ▁made ▁with ▁the ▁Southern ▁Railway ▁to ▁end ▁the ▁extension ▁at ▁M orden . ▁The