Diggin’ deeper

A 2,000-year-old computer? 10 archaeological finds that challenge history

Image: The Cleveland Museum of Art

Most of the time, archaeology uncovers little more than pottery shards and ancient tools—not that there’s anything wrong with those. But sometimes, when luck strikes, excavations can reveal bizarre, baffling, and downright eerie artifacts that challenge our understanding of history. Join us on a journey through 10 of the most fascinating mysteries and unexpected finds ever unearthed.

Image: Constantinos Kollias

Recovered from a shipwreck in 1901, the Antikythera Mechanism was a surprisingly complex artifact that used intricate bronze gears to predict eclipses, track planetary positions, and regulate calendars.

Advanced imaging techniques revealed it contained at least 37 interlocking gears, operated by a hand crank, earning it the title of the world’s first known analog computer.

Image: Seiji Seiji

Dating back to 500 BCE–500 CE, these lines cover over 400 square miles and depict animals, plants, and geometric shapes. Created by removing the top layer of reddish pebbles to expose the lighter soil beneath, they have remained intact thanks to the region’s dry climate.

While their full extent can only be appreciated from the air, scholars believe they served astronomical or ceremonial purposes at the time.

Image: Spencer Davis

Found across Europe, these hollow 12-sided polyhedra date to the 2nd–4th centuries CE. From the start, they puzzled scientists, who couldn’t determine their purpose.

Their size, ranging from 1.6 to 4.3 inches, and evenly spaced holes suggest they may have been measuring tools, religious artifacts, or even knitting aids. However, no ancient texts explain their use, and, so far, the mystery remains unsolved.

Image: F𝓪7𝓪𝓭 ✔️ .

This 2,000-year-old ceramic jar contained a copper cylinder and an iron rod, which some have speculated could have been part of an ancient galvanic cell.

It might have generated the electricity required for electroplating or medicinal purposes. Tests with modern replicas show it can produce a small voltage, though its true function remains unconfirmed.

Image: The New York Public Library

Drawn by Ottoman admiral Piri Reis in 1513, this early world map depicts parts of Europe, Africa, and the Americas with surprising precision.

Some theories claim it even shows Antarctica centuries before its official discovery. The surviving fragment is now kept in Istanbul’s Topkapı Palace.

Image: Mark Rasmuson

Carbon-dated to the early 15th century, this mysterious 240-page manuscript is written in an unknown script with even stranger botanical drawings.

Despite decades of cryptographic attempts, no one has cracked its meaning. It’s housed at Yale University’s Beinecke Library.

Image: Steinar Engeland

At the northernmost tip of the island of Newfoundland, Canada, lies the first confirmed Viking settlement in North America, dated to around 1000 CE. Excavations have revealed turf houses, iron-working remains, and Viking-style artifacts.

This UNESCO World Heritage site provides clear evidence that Norse explorers reached North America nearly 500 years before Columbus.

Image: Aaron Greenwood

Discovered in 1974, China’s Terracotta Warriors consist of over 8,000 life-sized clay soldiers standing in battle formation near Emperor Qin Shi Huang’s tomb.

Buried with the emperor around 210 BCE, these warriors were created to serve as his protectors in the afterlife, reflecting the emperor’s power and beliefs about immortality. The site remains one of the most significant archaeological discoveries in history.

Image: Gabriel Garcia Marengo

Discovered in the Alps in 1991, Ötzi is a naturally mummified man from the Copper Age, over 5,300 years old. Found with a copper axe and clothing made from multiple animal hides, his body is so perfectly preserved that even multiple tattoos can be identified.

Curiously, analysis of Ötzi’s remains revealed he died from an arrow wound, offering rare and valuable insight into prehistoric life, violence, and death during the Copper Age. A literal cold case from millennia ago, eh?

Image: Matteo Vistocco

Discovered in 1799, the Rosetta Stone is a granodiorite stele inscribed with the same text in three scripts: Greek, Demotic, and hieroglyphic. This unique trilingual inscription provided the crucial key to understanding ancient Egyptian hieroglyphs.

Thanks to the Rosetta Stone, Jean-François Champollion was able to crack the hieroglyphic code in 1822, unlocking centuries of Egyptian history. The artifact is now prominently displayed in the British Museum.

Secret uses

There’s a hidden microphone in your phone, and here’s where it is

You’ve probably twisted a bread bag closed, filled up your car, or pulled a sheet of aluminum foil from the box thousands of times without giving it a second thought. But many of the everyday objects we’ve used for decades have clever features that most people never notice. From the tiny pocket on blue jeans to the little arrow next to your gas gauge, these hidden designs have practical stories behind them, and once you know them, you’ll never look at these familiar items the same way again.

If you own an iPhone, you’ve probably noticed the tiny black dot next to the rear camera. It’s small, so people tend to assume it’s another camera sensor or even part of the phone’s design. The small hole found near the camera bump on every iPhone is actually a rear microphone.

It captures clearer audio when you’re recording videos and helps reduce background noise during FaceTime and regular phone calls. If you own an iPhone Pro model from the iPhone 12 Pro onward, you'll also see a larger dark circle. That’s the LiDAR scanner, which sends out invisible infrared light to create a 3D map of your surroundings. It helps the camera focus faster in low light, powers Apple’s Measure app, and makes augmented reality features much more accurate.

Whether it's a holiday dinner, an anniversary, or simply a nice meal with friends, you’ve probably held a wine bottle and noticed the deep indentation in the bottom. Many people tend to think the deeper the indent, the fancier the bottle.

That indentation is called a punt, and it’s been a part of the bottle-making for centuries. Originally, it helped strengthen hand-blown glass bottles, making them less likely to crack under pressure. Today, it still adds structural stability, particularly for sparkling wines, while also giving servers a comfortable place to rest their thumb when pouring, though some say it helps collect the sediment as wines age. In any case, a deeper pun doesn’t automatically mean a better or more expensive bottle.

Almost every driver has experienced that awkward moment at the gas station. You pull up to the pump, step out of the car, and suddenly realize the fuel door is on the opposite side.

To help prevent exactly that situation, many modern vehicles include a small arrow next to the gas pump symbol on the dashboard’s fuel gauge. The arrow points towards the side of the vehicle where the fuel filler door is located. It’s a small detail on the dashboard, yet once you notice it, you’ll never have to circle the pump again.

All elevators look pretty much the same. Bigger or smaller, they all look similar, a gray box with a mirror and buttons. But if you pay close attention, you may notice there’s a small round opening near the top of the door.

That opening is a keyhole used by trained maintenance technicians and emergency responders. With a special elevator key, they can manually unlock the landing doors when repairs are needed or if passengers become trapped inside. The system allows professionals to reach the elevator safely without damaging the doors or relying solely on electrical controls. Hopefully, most of us will never need to see it in action. But in an emergency, that tiny opening becomes one of the most important parts of the system.

If you’ve ever stood in the bread aisle comparing loaves, you’ve probably noticed the colorful plastic clips or twist ties holding the bags shut. Contrary to what many think, they’re not simply a part of the packaging.

For many bakeries and grocery stores, the colors indicate the day a loaf was delivered or baked. While the exact color schedule can vary between bakeries and regions, employees use the system to quickly spot older inventory and rotate fresher bread to the back of the shelf. That way, customers are more likely to pick up the freshest loaf available.

Whether you wear jeans every day or only pull them out for yard work, you’ve probably noticed the tiny extra pocket tucked inside one of the front pockets. It’s too small for a phone and not very useful for loose change, but there’s a reason for it.

Back in the 1800s, when Levi Strauss & Co. created rugged denim pants for miners, ranchers, and cowboys working across the American West, pocket watches were commonplace. Workers needed a safe place to carry their watches while riding horses, so that little pocket was designed specifically to protect the watch from damage. Pocket watches disappeared, but the tiny pocket became such an iconic part of blue jeans that manufacturers have continued including it for well over a century.

Almost everyone has had the same frustrating experience. You pull on a sheet of aluminum foil, and suddenly the entire roll slides out of the box and lands on the kitchen counter.

That’s exactly why major manufacturers such as Reynolds introduced the small side tabs, known as end locks, in the mid-1990s. By pressing the tabs inward, they hold the cardboard roll in place like built-in axles. This keeps the roll from sliding out of the box, makes it much more stable as you pull, and helps the serrated edge cut a cleaner, straighter sheet. It also reduces waste by preventing the foil from bunching up or tearing unevenly. It’s a simple design, yet useful as it can get.

Every household has pens lying around for all kinds of purposes. And most of them have a common feature, a hole in the cap, which isn’t simply part of the design.

BIC and other pen manufacturers included the opening as a safety feature. If someone, especially a child, accidentally swallows a pen cap, the hole can allow a small amount of air to pass through, reducing the risk of complete airway blockage while emergency help is on the way. The design became part of border efforts to improve consumer product safety after choking incidents drew attention to the danger of small plastic objects.

If you grew up sewing or watching somebody do it, you probably remember the classic tomato-shaped pincushion sitting beside the sewing basket. Hanging from it was a tiny red strawberry that looked like nothing more than a cute finishing touch.

In reality, that little strawberry has its own job. Instead of soft stuffing, it’s filled with emery, a gritty material made from crushed abrasive minerals. Running pins and needles through it helps polish away tiny spots of rust, smooth rough edges, and keep the points sharp enough to glide through fabric more easily.

Think back to the first time you learned to type. Maybe it was at work, or on a family computer. Wherever it was, someone probably told you to keep your fingers on the "home row." That’s exactly why the F and J keys have tiny raised ridges.

The bumps let your index fingers find the correct starting position by touch alone, allowing you to type without constantly looking down at the keyboard. The technique, known as "touch typing," is widely credited to American court stenographer Frank Edward McGurrin, who demonstrated it in 1888. As typewriters became more common, manufacturers experimented with different ways to help typists orient their hands, and by the mid-20th century, companies such as IBM standardized the subtly raised plastic bars that remain on nearly every keyboard today.