tunnel
underground passageway
Jacks Mountain Tunnel
railway tunnel in Fairfield, Pennsylvania
Nam Wan Tunnel
tunnel in Hong Kong
Griffith Tunnel
tunnel in Victoria, Australia
Perkasie Tunnel
railway tunnel in Pennsylvania, U.S
submerged floating tunnel
a tunnel that floats underwater, deep enough to avoid water traffic and weather
Saigon River Tunnel
tunnel in Ho Chi Minh city
Amir Kabir Tunnel
tunnel in Tehran, Iran
Fordham's Accommodation
tunnel in Gibraltar
East Side Big Pipe
American sewer line and tunnel
Fort Bonifacio Tunnel
tunnel in the Philippines
McClure Tunnel
tunnel in California
Fort Point Tunnel
road tunnel in Boston, Massachusetts
Winterberg tunnel
Passageway near Craonne, France
Big Dig
highway project
East Side Access
railroad public works project in New York City
Aberdeen Tunnel
tunnel in Hong Kong
Indigo Tunnel
abandoned railroad tunnel in Allegany County, Maryland, US
Jordan River Diversion Tunnel
infrastructure in Victoria, Australia
Logans Ferry Mine Tunnel
abandoned set of tunnels under the Allegheny River
Pitkin Tunnel
tunnel in New Haven, Connecticut
sough
an underground channel for draining water out of a mine
Thames Water Ring Main
London water supply infrastructure
Tunnel Bend diversion tunnel
goulburn River diversion tunnel in Australia
Tunnel Railway
narrow-gauge railway in Ramsgate, Kent, England, UK
Bund Sightseeing Tunnel
sightseeing tunnel in Shanghai
Houston tunnel system
tunnel system
Gagarin tunnel
highway and railway tunnel in Moscow
Green Mountain Tunnel
mine tunnel in Schuylkill County, Pennsylvania
Fort Mason Tunnel
former rail tunnel in San Francisco
Guadarrama Tunnel
railway tunnel in Spain
Chicago Tunnel Company
transport company
San Adrian
tunnel in the Basque Country, Spain
Burro Schmidt Tunnel
Registered Historic Place in Kern, California
Dyer Avenue
street in Manhattan, New York
East Side Railroad Tunnel
former railroad tunnel in Rhode Island
Heroes Tunnel
road tunnel in Woodbridge, Connecticut