The history of inspired diggers who have taken to making their own tunnels as a hobby.
Cascade Tunnel | Description, History, Avalanche, & Facts | Britannica
Tunnel of Eupalinos - Wikipedia
Is the Holland tunnel 46 feet deep and 390 feet wide and 100 miles long? - Quora
Is the Holland tunnel 46 feet deep and 390 feet wide and 100 miles long? - Quora
Tunnel - Wikipedia
Bugs Bunny dug a tunnel. First, he dug a straight - Gauthmath
US-Mexico Drug Tunnels Evolving Amid Increased Border Security | KPBS Public Media
Bugs Bunny dug a tunnel. First, he dug a straight - Gauthmath
The man who dug a tunnel in the desert for 38 years and then disappeared | ВКонтакте
Holland Tunnel - Wikipedia
US-Mexico border: 'Longest ever' smuggling tunnel discovered - BBC News
One Man Spent 38 Years Digging A Tunnel - YouTube
Brazil Police Foil What Would Be World's Biggest Bank Robbery Ever - brazzil
Germany: Robbers dig 100-foot tunnel to raid bank - The San Diego Union-Tribune
The World's Longest Road Tunnel - Laerdal Tunnel, Norway - Verdict Traffic
Visiting the Abandoned PA Turnpike near Breezewood, Pennsylvania - Uncovering PA
The World's Longest Road Tunnel - Laerdal Tunnel, Norway - Verdict Traffic
How to Build a Tunnel: 14 Steps (with Pictures) - wikiHow
Seattle's huge sewage tunnel is halfway drilled. Take a look inside | The Seattle Times
City of Water | The New Yorker
Tunnel discovered on US-Mexico border is longest ever, authorities say | Mexico | The Guardian
Pune: 100m of Metro tunnel dug up so far, work to pick up pace | Pune News - Times of India
The Long Dig | The New Yorker
Record-long drug-smuggling tunnel found from Mexico to San Diego - ABC News
