Brunel completed the Thames tunnel and also built Box Tunnel … stock image | Look and Learn
Light at the end of the tunnel: sun shines for Brunel's birthday | Engineering | The Guardian
Lorne House on Twitter: "To the right of the East entrance to Box Tunnel is another smaller tunnel - the entrance to to Box Tunnel Quarry, deep inside Box Hill. So good
Engineering Timelines - Box Tunnel
Box Tunnel: Electrification brings modern touch to England's past - Bath Chronicle
Box Tunnel - All You Need to Know BEFORE You Go (with Photos)