▁railway ▁in ▁the ▁German ▁state ▁of ▁Schles wig - Hol stein . ▁While ▁the ▁central ▁section ▁of ▁the ▁line , ▁which ▁is ▁shared ▁with ▁the ▁Ne um ün ster – Fl ens burg ▁line , ▁has ▁two ▁tracks ▁and ▁is ▁elect r ified , ▁its ▁western ▁and ▁eastern ▁sections ▁are ▁single ▁track ▁and ▁are ▁not ▁elect r ified . ▁It ▁connect s ▁the ▁cities ▁of ▁Hus um ▁and ▁K iel ▁via ▁R ends burg ▁and ▁serves ▁as ▁an ▁important ▁east - west ▁rail ▁axis ▁between ▁the ▁North ▁Sea ▁and ▁the ▁Balt ic ▁Sea . ▁ ▁Histor ically , ▁the ▁line ▁ran ▁from ▁Hus um ▁to ▁K iel ▁via ▁Er f de ▁and ▁R ends burg . ▁The ▁current ▁line ▁runs ▁via ▁J ü bek , ▁Schles wig ▁and ▁R ends burg , ▁with ▁the ▁J ü bek – R ends burg ▁section ▁being ▁shared ▁with ▁the ▁Ne um ün ster – Fl ens burg ▁line . ▁The ▁line ▁was ▁opened ▁in ▁ 1 8 5 4 ▁and ▁is ▁one ▁of ▁the ▁oldest ▁rail ways ▁in ▁Germany . ▁ ▁Route ▁ ▁The ▁line ▁begins ▁in ▁the ▁third ▁Hus um ▁station , ▁which ▁was ▁opened ▁in ▁ 1 9 1 0 ▁for ▁the ▁line ▁to ▁Er f de ▁and ▁R ends burg . ▁This ▁station ▁is ▁the ▁main ▁hub ▁of ▁the ▁North ▁Sea ▁coast ▁of ▁Schles wig - Hol stein . ▁In ▁addition ▁to ▁the ▁trains ▁to ▁and ▁from ▁K iel ▁it ▁is ▁served ▁by ▁the ▁trains ▁of ▁the ▁Marsh ▁Railway ▁and ▁the ▁Hus um