Tunnel
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![](https://www.fpri.org/docs/field/image/entrance_to_an_abandoned_train_tunnel.jpg)
Fighting Under the Earth: The History of Tunneling in Warfare
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Why is the Gotthard Base Tunnel so important? - SWI
![](https://uncoveringpa.com/wp-content/uploads/2022/10/Coburn-Tunnel-3869-600x400.jpg)
Exploring the Abandoned Coburn Tunnel in Centre County, PA
![](https://content.app-sources.com/s/39721457513420822/uploads/Images/Beginners_Guide_to_Underground_Tunneling-1664236.jpg)
Beginners Guide to Underground Tunneling
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Hamas' tunnels: Piercing a battleground beneath Gaza - CBS News
![](https://media.cnn.com/api/v1/images/stellar/prod/140630122719-tunnels-shanghai.jpg?q=w_3060,h_2037,x_0,y_0,c_fill/h_618)
10 of the world's greatest tunnels
![](https://static.timesofisrael.com/www/uploads/2023/12/b2ac51d7-1d64-49e1-81cd-0b77a7724d75-1024x640.jpg)
If the generals are counting tunnels, it suggests things are not
Key Swiss rail tunnel damaged by derailment won't fully reopen
![](https://daily.jstor.org/wp-content/uploads/2018/03/thames_tunnel_modern_1050x700.jpg)
How the Thames Tunnel Revealed London's Class Divide - JSTOR Daily
![](https://media.cnn.com/api/v1/images/stellar/prod/221202120153-13-amazing-tunnels-bund-sightseeing-tunnel.jpg?c=original)
The incredible tunnels pushing deep below the surface
![](https://static01.nyt.com/images/2023/12/19/multimedia/17israel-tunnels-01-vcbq/17israel-tunnels-01-vcbq-mediumSquareAt3X.jpg)
In Gaza, Israelis Display Tunnel Wide Enough to Handle Cars - The
![](https://gdb.voanews.com/01000000-0a00-0242-3333-08dc2a9e365d_w408_r1_s.jpg)
Israel Discovers Hamas Tunnels Under UNRWA Gaza Headquarters
![](https://cdn.britannica.com/31/221131-050-8634F87F/coal-mine-Zabrze-Poland.jpg)
Tunnels and underground excavations
![](https://industrialtour.co.uk/wp-content/uploads/2022/02/mount-pleasant-tunnel-south-portal.jpeg)
Mount Pleasant Tunnel - Visiting Guide & History
Tunnel Leica Geosystems