How to make tunnels

[MasterMind]

I've been trying to make tunnels for 2 days but keep failing. Tried to follow tutorials both here on cncnet (made by chrono vortex) and on youtube. Only thing left is actual help by someone who knows how to make them cause im done with that s*** xd 

 

So if someone has the good heart to help me i'd much appreciate it

[bbglas007]

I heard they're pretty buggy without the terrain expansion mod - We need to bug CNCnet to enable terrain expansion so we can play super cool maps! 
If you download terrain expansion, you will most likely have more luck, however no one will be able to play your maps unless they also have terrain expansion (tx)

There are a few maps posted on here with the tag [TX] on them, that's what it means

Terrain expansion also helps with train logic too