Bizarre Archaeological Finds That Still Baffle Scientists Today

The Longyou Caves

These caves are considered to be the Ninth Wonder of the World. They were discovered in the late 20th century and their enormity shocked archeologists and historians alike. Not only was there no written history about them at the time, scientists still have no idea why these caves are here at all.

The More You Know

Only two national flags have the color purple on them.
The Catholic Church considers the Theory of Evolution to be "virtually certain", and believes that intelligent design "isn't science even though it pretends to be."
Only ¼ of the Sahara Desert is sandy.
The glass winged butterfly lacks colored scales, which makes its wings transparent and helps it avoid predators.

Post originally appeared on Upbeat News.