20 Mysterious Discoveries On Earth & Some Have No Explanation

Our earth contains so many ancient marvels with complete histories. We know exactly how and when they were formed. We know how far the Pantheon dates back to; same with the ancient Pyramids of Giza.

However, our world has been around for a long time, leaving behind some mysterious landmarks whose stories aren’t quite as clear.

Let’s take a look at some of the most mysterious and mind-blowing discoveries that have been found on earth.

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Photo: Mental Floss