cod iac ▁River ▁in ▁Die ppe , ▁New ▁Brun sw ick ▁to ▁Am her st , ▁Nova ▁Scot ia ▁and ▁has ▁as ▁its ▁two ▁ocean ic ▁boundaries ▁the ▁Ch ig nect o ▁Bay , ▁a ▁sub - bas in ▁of ▁the ▁Bay ▁of ▁Fund y , ▁and ▁the ▁North umber land ▁Stra it , ▁an ▁arm ▁of ▁the ▁G ulf ▁of ▁St . ▁Lawrence . ▁The ▁is th mus ▁is ▁made ▁up ▁of ▁the ▁T ant ram ar ▁Marsh es , ▁at ▁sea - level , ▁and ▁four ▁rid ges ▁that ▁emer ge ▁from ▁the ▁Bay ▁of ▁Fund y ▁and ▁rise ▁north - e aster ly : ▁▁ ▁Fort ▁Lawrence ▁R idge : ▁The ▁site ▁of ▁Am her st , ▁NS ▁and ▁the ▁historic ▁location ▁of ▁Be a ub ass in , ▁Ac ad ia ' s ▁second ▁settlement ▁( after ▁Port ▁Royal ), ▁and ▁Britain ' s ▁Fort ▁Lawrence . ▁ ▁A ulas ▁R idge : ▁The ▁site ▁of ▁A ul ac , ▁N B ▁and ▁Fort ▁Be aus é j our ▁– ▁Fort ▁C umber land . ▁Form er ly ▁Be aus é j our ▁R idge . ▁Between ▁Fort ▁Lawrence ▁R idge ▁and ▁A ul ac ▁R idge ▁is ▁T ong ue ' s ▁Island , ▁the ▁former ▁seat ▁of ▁the ▁Ac ad ian ▁Government . ▁ ▁S ack ville ▁R idge : ▁Site ▁of ▁S ack ville , ▁N B ▁on ▁its ▁eastern ▁edge ▁and ▁Dor chester , ▁N B ▁on ▁its ▁west . ▁ ▁Mem ram cook ▁R