10 Unsolved Historical Mysteries That Still Confuse Experts

10. Petroglyphs

Petroglyphs are rock carvings made thousands of years ago. They show animals, humans, and strange symbols. Some are over 100,000 years old.

The crazy part is that carvings from different countries—like India and America—look very similar. Did ancient people around the world somehow share ideas? Or did they just think alike? We may never know.