The drawing contained a peculiar decoration, an open eye.

6 seconds sound clip from the Congo (1995) movie soundboard.

You can hear this line at 00:57:44.027 in the Blu-ray version of the movie.

Quote context

[...]

- We shall arrive there together. We shall all be rich.

- That's fine with me, except there is no Zinj. Half the safaris that have gone in there deep looking for it never made it back. The other half came back with nothing.

- Yes, but we have a trumping card that they did not have.

- We do?

- We do.

- That gorilla knows where it is.

- What?

- The gorilla?

- As a young man, I found a book in Soviet Georgia. It contained a detailed drawing of the city of Zinj.

- The drawing contained a peculiar decoration, an open eye.

- Later, on safari, I found this.

- It's the same symbol.

- Now, look at this. The gorilla drew this.

- It is the same image. It is the open eye.

[...]