Channel Tunnel - Wikipedia
Channel Tunnel | Description, History, Construction, & Facts
Fun Facts About the Channel Tunnel - ThoughtCo
How the Channel Tunnel Was Built and Designed - ThoughtCo
The Channel Tunnel: 25 fascinating facts - The Telegraph
The Channel Tunnel | Euro Tunnel - Eurostar
Facts About The Channel Tunnel - Eurotunnel LeShuttle™
Channel Tunnel: Construction of the World’s Longest Underwater Tunnel
10 Fascinating Facts About the Chunnel - Mental Floss
Channel Tunnel Facts - History of Rail Tunnel