An EV Grieve reader and fellow Mystery Lot aficionado sent along this e-mail earlier today:
There's something going on there this morning. Looks like some wooden platforms have created a path from the base of the large building under construction on the corner of 14th and 3rd. And some dirty metal things (scaffolding parts?) are being placed on them. I hope this leads to some sort of haunted house installation. Likely not.
Then! Before EV Grieve could scramble onto the scene for a photo... the reader wrote back:
Well...it's gone now.
(The platform, not the Mystery Lot)
[Cursing at sky]
A Curbed reader got a photo of the mystery structure....