Cave in.
Marvin, can you hear me? Marvin ? Damn ... that's just the echo of my own voice. I was wondering why Marvin would be calling out to himself. Marvin!? Right, so ... I think we went a little too far with the archaeological dig, particularly once we got Mitch Macaphee, our mad science advisor, and Marvin (my personal robot assistant) involved. At first it was just a lark - we took a shovel to the floor of the Cheney Hammer Mill's sub-basement just to see what we could find. Turns out there's a lot of dirt down there. (Little known fact: the Earth is largely composed of dirt. I suspect that's why "earth" is a synonym of "dirt".) Sure, we turned up our share of lost quarters, belt buckles, tie clips and fossilized coelacanths , but that was about it. Then Mitch decided to get involved, and of course, all hell broke loose. That is to say, he used one of his patented Particle Beam Generators™ to burn a hole through the Earth's crust, clear down to ...