Tuhia he haere tonu mō tēnei wāhanga - Tuatahi i hoatu earthworks i roto i 1779 ki te whakaekenga whakamahere i taua tau
Ko Dover, te whenua teitei ki te hauauru o Dover, Ingarangi, e kiia nei ko Dover Western Heights, i tino kaha i te tau 1804 i te wa i whakahaua ai a Lieutenant-Colonel William Twiss ki te whakahou i nga parenga o mua. He waahanga tenei o te kaupapa whakakaha nui hei whakautu ki te whakaekenga a Napoleon ki te United Kingdom. I whai ake i te wa roa o nga mahi e pa ana ki a Twiss mo te whakapai ake i nga whakapae o Dover Castle (1794 1803).