IPFS News Link • Travel
Superlong Tunnels now and in the near future
• https://www.nextbigfuture.comMetro rail and rail tunnels in Asia and Europe have reached 37.5 miles long.
The Channel tunnels is 31.3 miles long and has the longest underwater section.
China is already building the Yunnan–Guizhou Water Tunnel which will be 410 miles long (661 kilometers). It is to be completed by 2025.