Connaught Tunnel is in a northern province of Ireland.
Connaught Tunnel . At the time it was built , the Connaught Tunnel was the longest railway tunnel in North America . Ireland ( [ ˈaɪərlənd ] Éire [ ˈeːɾʲə ] ; Ulster-Scots : Airlann [ - scoˈɑːrlən ] ) is an island in the North Atlantic . It is separated from Great Britain to its east by the North Channel , the Irish Sea , and St George 's Channel .