Category:Tunnels in the United States by populated place
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Subcategories
This category has the following 9 subcategories, out of 9 total.
B
- Tunnels in Baltimore (5 P)
- Tunnels in Boston (12 P)
L
- Tunnels in Los Angeles (8 P)
N
P
- Tunnels in Philadelphia (4 P)
- Tunnels in Pittsburgh (14 P)
S
- Tunnels in San Francisco (14 P)