Able to build tunnels coming out of the water
cramyzarc
Happened to me too many times. I figured that if you place rocks around the tunnel gate, it seems to get better...
Christian S
Correctly rendered (with no water in tunnel) it could be a kind of Oeresund bridge, sweden.
- This construction is possible, but metro and underwater tunnels at all should be clearly more expensive, so especially that version.
btw: With a road node at shore level your tunnel entrance could easily placed at the flank of the hill.