Whoops, looked at the other thread. Apparently it's the power substation. Anyway, here's a pic. Kindly forgive the presence of the bike in the picture. Riding there makes it more interesting (well, at least to me), as I have more time to look at the landscape and try to pick out subtle marks.
Winter, BTW, seems a better time, as the undergrowth is less.
First pic should be the I/R right of way, second should be the Milwaukee grade crossing just north of the elevators.