If you have ever driven on the eastern spur of the New Jersey Turnpike, you have been on Snake Hill. It is a big jagged rock sprouting out of the Meadowlands in Secaucus, and supposedly inspired the Prudential logo and slogan. Today this geological oddity has been chipped away to half of its original size and covered with random graffiti. Some folks, who think "Snake Hill" is a name with negative connotations, try to call it by the refreshingly original name of "Laurel Hill".
For folks interested in the history of the area, there's a few pages about it in this awesome book:
If you want to read the article detailing the area, here it is: