tunnel
underground passageway
Williams Way
tunnel in Gibraltar
Dark Gate
tunnel in Esztergom, Hungary
road tunnel
tunnel built for vehicular road traffic
Busby's Bore
Heritage-listed former water management facility in Sydney, Australia
Cassiar Tunnel
highway traffic tunnel on the Trans-Canada Highway in Vancouver, British Columbia
Columbia University tunnels
System of service tunnels connecting the buildings
Delegate River Diversion Tunnel
river diversion tunnel in Victoria, Australia
Dorking Caves
tunnels in Dorking, Surrey, England, UK
John H. Wilson Tunnels
highway tunnels in Hawaii
Kessler Tunnel
abandoned railroad tunnel in Allegany County, Maryland, US
Rays Hill Tunnel
Tunnel on the original Pennsylvania Turnpike
Screaming Tunnel
Tunnel in Ontario, Canada
Tunnel and Reservoir Plan
tunnel system in Chicago
Admiralty Tunnel
tunnel in Gibraltar
Glasgow Harbour Tunnel Rotundas
Rotunda in Glasgow City, Scotland, UK
Tunnel du Bois Clair
disused railway tunnel in France, now a cycle tunnel (cycle path Voie Verte de Bourgogne du Sud)
Mass Transit Super Bowl
transportation plan for the 2014 Super Bowl
Catawissa Tunnel
mine drainage tunnel in Schuylkill County, Pennsylvania
cycling tunnel
tunnel used by cyclists, pedestrians and other slow traffic
Cheung Shan Tunnel
tunnel in Hong Kong
La Mina
cultural heritage in Daroca
Little Peninsula Tunnel
diversion of the Yarra River, Victoria, Australia
Mitchell Point Tunnel
former tunnel of the Historic Columbia River Highway
Pound Bend Tunnel
diversion tunnel on the Yarra River at Warrandyte, Victoria, Australia
Shing Mun Tunnels
Road tunnels in Shing Mun, Hong Kong
Tar Tunnel
tunnel containing a natural bitumen spring at Coalport, England
Tunnels of Nottingham
transportation tunnels in Nottingham, UK
Turn Hole Tunnel
abandoned railroad tunnel near Jim Thorpe, PA
Waterloo and Whitehall Railway
1860s partly constructed pneumatic railway in London, England
cable tunnel
tunnel containing electrical cables
Krog Street Tunnel
Tourist attraction in Atlanta, Georgia, U.S.
Nam Fung - Parker Cable Tunnel
Hong Kong tunnel
Ishikawa Tunnel
part of Japan National Route 329 in Uruma, Okinawa
Devonshire Street Tunnel
Pedestrian tunnel in Sydney, Australia
Acton Tunnel
short road tunnel in Acton, Australian Capital Territory
Operation Gold
joint US/UK intelligence-gathering operation in Berlin in the 1950s
Underground Great Wall
archaeological tunnel in China
Stalin tunnel
tunnel in Vladivostok, Russia
Blowhole Diversion Tunnel
creek diversion tunnel in Victoria, Australia
Fawley Tunnel
3-metre diameter, 3.2 km long tunnel under Southampton Water between Fawley Power Station and Chilling near Warsash
Haughtons Flat Diversion Tunnel
diversion tunnel in Victoria, Australia