Stephen King : What is it with him and culverts?

I'm far from a Stephen King aficionado. In fact, I'm just starting to read probably my sixth book of his. However, in all but one of the stories I read, he has at least one scene taking place in or near a culvert:

The Dead Zone
The Stand
Rita Hayworth and Shawshank Redemption
The Body
Apt Pupil

I've never given that much thought to culverts, but maybe I should. 

Maybe you should. You never know what's in there until you look. But be careful when you do.

Death lies dormant in each of us and will bloom in time. Odd Thomas

What the h is a culvert???

http://bfy.tw/6bPI

Put your money where your stumps are.

Just wait until you get to "It"!!!