That looks like a cave. Let's get in there.

2 seconds sound clip from the Radar Men from the Moon - Molten Terror (S1E2) movie soundboard.

You can hear this line at 00:11:03.480 in the Blu-ray version of the movie.

Quote context

[...]

- He must have come this way, he couldn't have got by the guards at the canyon bridge.

- No.

- And he won't move very fast carrying that gun.

- There they are. Give them a blast.

- What do we do now?

- Let's try to keep going. Maybe we could dodge around those rocks and lose them.

- They're still after us. Let's go.

- That looks like a cave. Let's get in there.

- We can't follow them in there.

- Set the ray gun at constant heat, it will melt the cliff and bury them alive.

- Right.

- What's that?

- They turned the ray gun into the side of the cave and it's melting the rock.

- Let's get back as far as we can. Never mind the gun!

[...]