Humans are always discovering crazy things. In fact, some may say that the history of human civilization is the history of discoveries. In our long and storied history, we've discovered many things. 

Some, like electricity and gravity, were pleasant and useful, while some have been utterly shocking. So shocking that you may get a nightmare if you truly knew of them. 

And today, we'll be taking a long and hard look at the 10 most shocking discoveries found buried underground. Stick around to see what we have at number three. You will be shocked beyond reason, and that's a promise. 

#10 Decapitated Gladiators 

Have you watched movies where brave gladiators fight to the death? Those kinds of videos are often grisly, and larger than life. In fact, you may be convinced that they have no real bearing on reality, and are just fictional retellings of much less brutal affairs. But then, you would be wrong