[bigfatkitten]

And because getting heavy plant up through a mountain range to dig trenches etc is a pain in the arse. It’s easier to do it along a main road.

[db48x]

If you were smart about it then you wouldn’t go up in the mountains in the first place. To get the lowest possible latency you want a straight shot, so obviously you should just bore your way through at the level of the plains on either side.