- Big rock.
- That's right. That's MacDonald's boundary.
7 seconds sound clip from the El Dorado (1966) movie soundboard.
You can hear this line at 00:06:39 in the Blu-ray version of the movie.
Quote context
[...]
- Well, I'd like that very much, but I promised .P. I'd do something for him. Didn't I?
- Course, if you want to do my errands...
- Will you buy us that drink a couple of hours from now?
- Where is this Bart Jason's place?
- That's right. That's MacDonald's boundary.
- You ride east from there about three miles, and you get to Bart Jason's ranch.
- Maudie, remember, I'm coming back.
- Thanks.
- You must like that man. Want me to tell you about him?
[...]