Fritchley Tunnel
... that Fritchley Tunnel is believed to be the oldest surviving railway tunnel in the world?
... that <b id="mwAdk"><a href="./Fritchley_Tunnel" id="mwAdo" rel="mw:WikiLink" title="Fritchley Tunnel">Fritchley Tunnel</a></b> is believed to be the oldest surviving railway tunnel in the world?