Thread:GeorgeSimpson1941/@comment-69.138.175.102-20160730235537

I had this problem also, and basically had to shift all my monorail structure by 1 square.

Why? Because the monorail tunnel can only be placed in certain spots along the mountains, and the track is in a fixed spot with respect to the rest of the (large) object.

EVERYTHING in your monorail takes up 4 or 2 units both east-west and north-south. Depending on where you initially placed your monorail station, you established an even or odd parity for your monorail (even = everything is on even coordinates: 2, 4, 6, 8, ..). The monorail tunnel requires odd parity east-west. If, by chance, you initially chose even parity on that direction, then you have no choice but to move everything. Sorry. 