And what's more, the evidence seems pretty conclusive that it hasn't been covered by a natural erosion or other forces.

9 seconds sound clip from the 2001: A Space Odyssey (1968) movie soundboard.

You can hear this line at 00:48:26 in the Blu-ray version of the movie.

Quote context

[...]

- Oh, yeah.

- When we first found it, we thought it might be magnetic rock, but all the geological evidence was against it.

- And not even a nickel-iron meteorite could produce a field as intense as this.

- So we decided to have a look.

- We thought it might be the upper part of some buried structure. So we excavated out on all sides, but unfortunately, we didn't find anything else.

- And what's more, the evidence seems pretty conclusive that it hasn't been covered by a natural erosion or other forces.

- It seems to have been deliberately buried.

- Deliberately buried.

- Well, how about a little coffee?

- Oh, great.

- Good idea.

- I don't suppose you have any idea what the damn thing is?

[...]