Findings:

• A crowded subway car
• Angel and Devil on the subway
• Tunnel of Love
• Atlantic Avenue Tunnel
• You don't see the light at the end of the tunnel now, but it's there. I'm holding it for you.
• Riding in the subway on a snowy afternoon, avoiding people's eyes
• Subway emergency cord
• flesh tunnel
• The light at the end of the tunnel
• The girl on the subway
• tunnel
• Dark at the End of the Tunnel
• ribonucleotide triphosphate tunnel
• Los Angeles subway system
• Greg Brail's amazing interactive NYC subway map
• Channel Tunnel
• Cincinnati subway
• iPod on Subway
• Whittier Tunnel
• Fort McHenry Tunnel
• Subway Diet
• Holland Tunnel
• A Transatlantic Tunnel, Hurrah!
• Tales of the Subway
• Retired NYC Subway Cars
• Tunnel Bear
• The Screaming Tunnel of Thorold, Ontario
• Subway loudmouths
• Escape and Evasion through the subways of time gone by
• Provo Canyon Tunnel
• Brooklyn-Battery Tunnel
• Subway
• Microscopic Liquid Subway to Oblivion
• bridge and tunnel
• Tunnels & Trolls
• tunnel freezer
• New York City Subway Car Roster
• Fukuoka City Subway
• tunnel vision
• Tunnel rat
• New York City Subway Station Computer
• H-3 Tunnel
• Brooklyn Battery Tunnel
• Subway Stories
• São Paulo Subway
• Snow Tunnel Cake
• Tunnel stern
• subways of the world
• Kyoto City Subway
• Tunnels of Doom
• An old guy I saw in the subway
• Bunyard Tunnel
• Emlen Tunnel
• We rode the subway that day
• Steam tunnel
• wind tunnel
• Morocco Spain Rail Tunnel
• The new experimental New York City subway cars
• Sapporo City Subway
• carnal tunnel syndrome
• Lincoln Tunnel
• I love riding the subway on Valentine's Day
• Central Artery/Third Harbor Tunnel
• Tunnel to Towers
• Bloor-Danforth Subway
• Subway Jap
• The Time Tunnel
• SSH Tunnel
• The New York City Subway Lines Project
• Helsinki Subway
• religious tunnel vision
• Queens-Midtown Tunnel
• Newark City Subway
• the tunnel song
• The Mont Blanc Tunnel Disaster
• eating on the subway
• The other perv on the subway
• roof and tunnel hacking
• Shanghai Tunnel
• Robertson Tunnel
• Subway Club Card
• Yonge-University-Spadina Subway
• ip tunnel
• Getting yelled at on the subway
• RIT cross-campus tunnel
• Staple Bend Tunnel
• subway token
• Tandy Subway
• toad tunnel
• Tunnel in the Key of G
• Through the Tunnel
• Subway map floating in a New York sidewalk
• Don't Sleep in the Subway
• Ulnar Tunnel Syndrome
• Seikan Tunnel
• Independent subway system
• The light at the end of the tunnel has been switched off.
• Freedom Tunnel
• New York subway
• Osaka City Subway
• reality tunnel
• Tunnel Runner
• Tunnels
• subway series
• The Subway Song
• Cathy Martin and the tunnel of fire
• Green Grass of Tunnel
• Buenos Aires subway system
• No Hazmats in Tunnel
• Baltimore Harbor Tunnel
• T.A.Z.: I. Slogans & Mottos for Subway Graffiti & Other Purposes
• Tokyo Subway
• light at the end of the tunnel
• Chesapeake Bay Bridge Tunnel
• New York City's worst subway disaster
• New York City Subway
• Tunnel in the Sky
• Extensive tunnels and underground bunkers
• Risqué comment opportunities when you're a Subway employee
• Carpal Tunnel Syndrome
• Eisenhower Tunnel
• Fort Pitt Tunnel

If you Log in you could create a "subway tunnel" node. If you don't already have an account, you can register here.