Deliktaş Tunnel
... that the construction of the Deliktaş Tunnel, Turkey's longest railway tunnel, lasted almost four decades?
... that the construction of the <b id="mwBUE"><a href="./Deliktaş_Tunnel" id="mwBUI" rel="mw:WikiLink" title="Deliktaş Tunnel">Deliktaş Tunnel</a></b>, Turkey's longest <a class="mw-redirect" href="./Railway_tunnel" id="mwBUM" rel="mw:WikiLink" title="Railway tunnel">railway tunnel</a>, lasted almost four decades?