Let's go down to the quarry...

I saw this flying into Chicago, and thought of the SDMB.

So that’s where all the stolen cars end up!

As well as the bodies of mob informants.

Hoffa?

I remember seeing some of the quarries as you approach Chicago (Midway).

But I was really amazed to see a lot, and some really big, deep ones as you approach Dulles (Washington DC). They are really close to the roads, but shielded by rows of trees.

If that was south of Chicago, it’t almost certainly the Thornton Quarry.

Here’s another picture of it.

Too bad the windows in a jetliner are sealed. You could have tried to throw something in it.

At least a parachute! Good dig!

So, what do you suppose they’re quarrying there? Or were, since it looks like it’s filling up with water.

I’m always a little jealous when I read a book or see in a movie or such where all the kids go to the old quarry to swim. The only quarries around here are sand and gravel that are dug into the sides of hills. No (potentially hazardous) artificial lake for us.

It produces various rock and sand collectively known as aggregate. The water may be from Chicago’s Deep Tunnel Project – it’s a reservoir for storm run-off.

Thanks for the quick reply, Boyo!

My favorite quarry:

Tenino WA city swimming pool
There’s a shallow side that is concrete-floored for children and wussies. You have to pass a little swim test to swim on the deep side. I have no idea how deep the deep side is. But, really deep. Gigantic waterfall also a feature.

Pretty sure they frown on people throwing things in it.

The two photos didn’t look like a match to me so I did some Googling; I think what beowulff saw was the Elmhurst Quarry. The baseball diamond to the left of the quarry looks the same.

Who else misparsed the sentence in the OP? I read it and was thinking “Wait, he saw a flying quarry?”.

But how the quarry got in his pajamas, I’ll never know.

Over the years I’ve several times gotten my intended quarry into my pajamas. Sadly not so much now that I’m older.