That's East Proctor, and all about here are the moors.
6 seconds sound clip from the An American Werewolf in London movie soundboard.
You can hear this line at 00:03:43 in the Blu-ray version of the movie.
Quote context
[...]
- I heard somebody whisper please adore me and when I looked the moon had turned to gold. (2)
- Blue moon, now I'm no longer alone without a dream in my heart, without a love of my own. (2)
- That's East Proctor, and all about here are the moors.
- Boys, keep off the moors. Stick to the roads, and the best of luck.
- Thanks again. I'm gonna miss you.
[...]