One thing that's seen in Central Park are many tiny mountains (that's how I think of them) made of solid rock. They don't seems to belong there...but they are. They have a name but I can't recall it.
These "mountains",I recently learned,were deposited there thousands of years ago by the glacier that once enveloped what is now called "Manhattan".
Unless I'm mistaken that glacier disappeared long,*long* before the advent of the internal combustion engine but I don't see how that could be possible.
“Unless I’m mistaken that glacier disappeared long,*long* before the advent of the internal combustion engine but I don’t see how that could be possible.”
You can see the striations from the glacier in some of the rocks in Central Park.