Lincoln Tunnel, Holland Tunnel, Brooklyn Battery Tunnel.
There are four tunnels connecting to Manhattan: the Lincoln Tunnel, Holland Tunnel, Brooklyn-Battery Tunnel, and Queens-Midtown Tunnel. The Lincoln and Holland Tunnels connect New Jersey to Manhattan. The Queens-Midtown Tunnel connects Queens to Manhattan, and the Brooklyn-Battery Tunnel connects Brooklyn to Manhattan.
There are four tunnels connecting to Manhattan: the Lincoln Tunnel, Holland Tunnel, Brooklyn-Battery Tunnel, and Queens-Midtown Tunnel. The Lincoln and Holland Tunnels connect New Jersey to Manhattan. The Queens-Midtown Tunnel connects Queens to Manhattan, and the Brooklyn-Battery Tunnel connects Brooklyn to Manhattan.
The present Cascade Tunnel is 7.79 miles long. The original Cascade Tunnel was 2.63 miles long.
Long Dock Tunnel was created in 1860.
The Thames Tunnel is 1,300 feet (396 meters) long.
The M5 East Tunnel in Syndey is 8.55 km long.
The Hoosac Tunnel is 4.75 miles in length or 7.64 km long.
Mont Blanc Tunnel is 11.6 kilometres or 7.25 miles long
There is really no limit to how long a ants tunnel can get...but most of the time a ants tunnel can get to 3 to 5 feet deep into the ground...
Brooklyn Battery
The Brooklyn-Battery Tunnel is in New York City and at 9,117 feet (2,779 m) is the longest underwater tunnel in North America.