Explore relationships
List of longest tunnels
This list of longest tunnels ranks tunnels that are at least 13 km (8.1 mi) long. Only continuous tunnels are included.
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Explore relationships
This list of longest tunnels ranks tunnels that are at least 13 km (8.1 mi) long. Only continuous tunnels are included.
Use + to expand a branch. Click a topic name to open its summary.