I've currently got nothing much on this except a name and a vague idea but I thought I'd trial the idea a bit first, so... New train lines have been proposed to connect various kingdoms and key locations together. However, they are required to pass through places like Ponyville in order to work. Obviously, Ponyville won't be flattened for a train line but going around is impracticable. As well as places like the Everfree Forest and other settlements. Various mountain ranges offer their own problems too. So, the plan is to build them underground. This train system will need miles and miles of tunnels. It's not all plane...well, mining, I suppose. While work has progressed well, most work teams have stumbled upon various issues with their tunnels. They've either gone missing or stumbled onto some bizarre structures that make it almost impossible to progress. You are part of a team that have been hired to investigate. When I've got more than these bare bones, I'll put it up here.
