We might be the top of the food chain, and the most advanced species on the planet, but for all of our technological advancements, we still can't seem to figure out some of the "whys" of the ancient world. The world might be a smaller place than it was 2000 years ago, but there are still mysteries out there that are waiting to be solved.
Here are 8 ancient mysteries that still have scientists and academics scratching their heads.
1. The Giant Stone Spheres of Costa Rica
These stone spheres were first found in the 1940s, these round stones can go from anywhere between two centimeters in diameter, all the way up to two meters. Some of them have been known to weigh as much as 16 tons, and all of them are man-made. Most of the stones have been moved to other locations, or have become privately owned, and still no one can figure out what their original use was.
2. The Baghdad Batteries
German archaeologist, Wilhelm Konig first discovered these strange devices in 1838, while digging in what is now modern-day Iraq. They were clay jars that contained iron rods encased in copper. Konig believed these to be ancient batteries, but the idea that our predecessors could have figured out this advanced technology in 200 BCE is somewhat outrageous. Experts can't seem to agree on what they were used for.
3. Easter Island's Rongorongo Writings
Even though Easter Island is more prominently known for its huge head statues, there is another lesser known mystery about the island; the Rongorongo Writings. They are an advanced system of glyphs (or symbols) that predate modern writing. They go back to around the year 1200, and they feature religious symbols that are found on other items and places around the area. It isn't known if this is a language or just an artistic rendering from the time, but if it is a language, it would have developed independently, without any outside interference.
4. The Nazca Lines
The simplest way to describe the Nazca Lines is to imagine modern-day crop circles, except on an insanely massive scale, and carved into the desert floor in Southern Peru. They depict everything from simple line designs, to intricate depictions of animals. No one knows what their true purpose was, but some theorize that they marked star positions, or served as landmarks for incoming sailors. Some even believe that they were left by extra-terrestrials...