There are a couple of obvious ways of looking at this. Yes, there are more than two ways, but I'm going to focus exclusively on the obvious ones.
First, trapdoors. I said it. You read it. Trapdoors. We've all seen them in at least one capacity; usually as a piece of flooring that can be made to rapidly, suddenly and unexpectedly fall out from beneath a person. But what's beneath the trapdoor? What's at the bottom of that shaft in which the person just hilariously fell? For the unimaginative....nothing. Just another floor some distance below the one they just fell through. For the lightly or marginally imaginative there might be spikes, or alligators or alligators with spikes on their backs. What I'm trying to convey is there would be some sort of combination of sharp objects and scaly American reptiles. Me, I'm a used hypodermic needles and leeches kind of guy. Don't ask me where I get those items in large quantities, because my guy doesn't like dealing to strangers.
Second, and no less obvious, is Copper. No, not the British/Australian slang for Police Officer; I'm referring to the chemical element. Good old Cu, or "Atomic Number 29" for those of you who fancy figures. In addition to having ridiculously high electrical and thermal conductivity, Copper is essential to all living organisms. How can that be? Well, "...it is a key constituent of the respiratory enzyme complex cytochrome c oxidase."
In conclusion, Uruguay is a land of contrasts.
/I'm going back to drinking now