Yes, the part they were working on doesn't extend fully to where I was digging, though it does cover the spot where the entranceway underground passenger subway was exactly, which is where my initial chamber was leading to, but that section was an old collapse from the looks of things.
The entrance to the chamber that I dug out, the bit above that looked really dodge before I attempted going in, that part has partially collapsed, but inside the chamber is exactly the same. So to make it safe, I'll need to remove the topsoil and brick, then plank it up and cover that in the soil.
