  km ) ▁long ▁ ▁gauge ▁L lande g ai ▁Tr am way ▁which ▁was ▁built ▁in ▁ 1 7 9 8 . ▁The ▁tram way ▁was ▁connected ▁to ▁a ▁local ▁fl int ▁mill ▁that ▁ground ▁cl ay ▁and ▁ch ert ▁into ▁fl ints . ▁These ▁were ▁transport ed ▁to ▁P orth ▁Pen rh yn ▁on ▁the ▁coast ▁by ▁the ▁tram way , ▁which ▁was ▁one ▁of ▁the ▁earliest ▁over ground ▁rail ways ▁in ▁Britain . ▁It ▁included ▁two ▁bal anced ▁gravity ▁incl ines ▁one ▁from ▁the ▁floor ▁of ▁the ▁C egin ▁valley ▁near ▁L lande g ai ▁to ▁the ▁hills ▁above ▁Bang or , ▁the ▁other ▁dro pping ▁from ▁there ▁to ▁the ▁mill . ▁Both ▁incl ines ▁used ▁vert ically ▁mounted ▁w inding ▁drums . ▁ ▁Pen rh yn ▁Railway ▁( 1 8 0 1 – 1 8 7 8 ) ▁ ▁The ▁success ▁of ▁the ▁L lande g ai ▁Tr am way ▁encourag ed ▁the ▁own ers ▁of ▁the ▁Pen rh yn ▁quar ry ▁to ▁consider ▁a ▁similar ▁tram way ▁from ▁their ▁sl ate ▁quar ry ▁to ▁P orth ▁Pen rh yn . ▁The ▁plan ▁sub sum ed ▁the ▁existing ▁tram way ▁into ▁a ▁longer ▁rail road ▁that ▁connected ▁Beth es da ▁to ▁the ▁sea . ▁▁ ▁Const ruction ▁started ▁on ▁ 2 ▁September ▁ 1 8 0 0 , ▁relay ing ▁and ▁extending ▁the ▁L lande g ai ▁Tr am way , ▁with ▁the ▁first ▁sl ate ▁train ▁travel ing ▁on ▁ 2 5 ▁June ▁ 1 8 0 1