Rhaetian Railways Filisur Crossing Station Railway Knot High Mountains

train railway switzerland tourism gleise red railway station alpine platform world heritage hub electric locomotive high mountains graubünden regional train electrical multiple unit regional traffic switch trainstation svizzera all year round southeast switzerland diplomatic traffic meter track crossing station railway knot abe 8-12 rhb rhaetian railways ferrovia retica filisur albula junction davos albula line ge 4-4 lll