Abandoned...Something

I didn't go farther than the sign, just looked.

The wall looked like it was fitted with studs to stick some sort of exterior surface to the concrete.

Also, is that a train?!

Here's the gate out front.

And here's the other gate more out front.

Some interesting detail.

Everything appeared to be concrete.

Here's a view of that one building I went up behind. There was a larger one I didn't photograph.

But here's that gate.