From ancient religious texts buried in Egypt, to cultural relics found at sea, or even a terrifying tower of skulls hiding under the earth--these lost artifacts change what we thought we knew about certain sacred beliefs.

Sometimes the biggest and scariest beasts are actually a lot closer to us than we think. From a mythical monster that turns out to be real, to one of the deadliest prehistoric animals on the planet, and a frozen tundra hiding a pandora's box full of lethal pathogens--these startling discoveries shock and terrify the world.