- Dr. Benton C. Quest: Well, there she goes, headed right for the top of the Devil's Escarpment.
- Jonny Quest: Devil's Escarpment?
- Dr. Benton C. Quest: Yes. They call it that because there's no known way to climb it. No one has ever been up there.
- Jonny Quest: You mean the balloon is lost for good?
- Dr. Benton C. Quest: No, we have to get it. It would take months to replace that instrument package.
- Roger T. 'Race' Bannon: How'd you get HERE?
- Dr. Benton C. Quest: Oh, probably the same way you did - those amazing throwbacks, those cavemen.
- Roger T. 'Race' Bannon: Maybe somebody's shooting a B-picture.
- Dr. Benton C. Quest: I am Dr. Benton Quest, and this is...
- Heinrich Von Duffel: Silence! I have no interest in your names. You will speak when asked and will do as you are told. Is that understood? Is that clear?
- Dr. Benton C. Quest: [without fear] Perfectly.
- Heinrich Von Duffel: Heh-heh-heh-heh. Very good. You are wise. Unlike you, I AM armed and will shoot instantly anyone who does not follow my orders, eh?
- Dr. Benton C. Quest: What do you want with us?
- Heinrich Von Duffel: Your airplane. For nineteen years I have been on this escarpment, living with these animals. Now, thanks to your plane, I shall return to civilization and live on the great wealth I have found here.
- Dr. Benton C. Quest: Wealth?
- Heinrich Von Duffel: Diamonds! Diamonds beyond your wildest dreams, dug out by these misshapen creatures who have no idea they are living in a diamond mine.
- Hadji: I didn't know Bandit could run so fast.
- Jonny Quest: He didn't either till he saw that big gorilla.
- Dr. Benton C. Quest: What's our altitute, Race?
- Roger T. 'Race' Bannon: Eight thousand.
- Dr. Benton C. Quest: And we're still not level with that escarpment. It must be at least two miles high. No wonder no one's ever climbed it.