From UFOs to psychic powers and government conspiracies, history is riddled with unexplained events. You can turn back now or learn the Stuff They Don't Want You To Know, an audio podcast from HowStuffWorks.com.

What the heck is Stonehenge?

November 28, 201438 min
It's ancient, it's huge, and it's cited in all sorts of fringe theories, from stories of lost civilizations to ley lines and more. But what is Stonehenge, really?Learn more about advertising on the HowStuffWorks podcasts at www.howstuffworks.com/advertisers.htmAnd to learn about your ad choices when listening to podcasts, visit https://www.howstuffworks.com/privacy.htm#ad-choices