25 Most Mysterious Ancient Finds Scientists Still Can't Explain

To kick things off, we've got an aviation tale that's as mysterious as it is fascinating. Imagine a letter written in 1870 during the Prussian siege of Paris, making its way to Australia's National Archive. Yes, you heard that right! Written by a man named Charles Mesnier to his mother in Normandy, this letter was flown out of Paris by hot air balloon. The letter details the conditions in Paris during the siege, from the scarcity of meat to the resilience of the Parisians. It was posted on 7 December 1870 and reached Madame Mesnier just over a week later. But here's the kicker. Nobody knows how this intriguing piece of history ended up down under. The National Archives stumbled upon it while discussing a potential exhibit with their French counterparts. The letter, measuring a mere 8 inches by 5 inches, was one of nearly 2 million sent via hot air balloon during the siege to bypass the enemy. It's speculated that the letter might have been bought at auction and then donated to the Queensland Telegraph Museum, but that's just a theory. So, we're left with a historical puzzle that's as fascinating as the letter itself. Our next trip is to Pakistan to see the Rannikot Fort. Some people call this structure the Great Wall of Sindh and argue that it ought to be as famous as the Great Wall of China. The fort is enormous and can be found in Pakistan's Jamshoro district. Calling it the Great Wall of Sindh isn't entirely accurate because the wall isn't technically part of the fort. Instead, it's the fort's outermost defense system. There are also three smaller walls within the perimeter of the larger one. If you include the wall as part of the fort, which not everybody does, it's the largest fort in the world. The walls are 21 miles in length, and the area of the fort covers more than 40 square miles. There are microstates in the region smaller than that. The strangest thing about Rannikot Fort is that nobody knows why it was built or even when it was built. It's in the middle of nowhere, and there's never been a settlement anywhere near it. There was nothing for the fort to protect. Estimates of its age range from the 9th century to the 19th. The Pakistani government has never allowed archaeologists to dig at the site, and until they do, it's doubtful that we'll get any answers. Our next find might make you itchy, and it's not just because it's a bit of a head-scratcher. Staff at the Wayne County Historical Museum in Richmond, Indiana, USA were left utterly bewildered when a mysterious box was left at their doorstep. Inside was a creature that looked like something straight out of a horror film – a mummified rat-human hybrid. The note accompanying this bizarre find claimed it was the Richmond Rat Boy, allegedly discovered long ago in the basement of a local hospital and once owned by a circus worker. The museum staff reckon it's probably a gaff, a fabricated cryptid created as a sideshow attraction. They think it's made from plaster of Paris and clay, adorned with animal claws and hair, likely originating from circuses that toured the area between the 1910s and 1930s. But the real mystery? The identity of the donor. Without proper paperwork, this oddity can't officially join the museum's collection. Put it this way – if you're the one who left Rat Boy at the museum, they'd love to hear from you. Until then, this perplexing creature has become the staff's new pet, and they're even planning to exhibit it. Historians in Israel are having a difficult time of things at the moment because the city of David National Park in Jerusalem has just thrown a curveball that's got even the country's most seasoned archaeologists scratching their heads. We're talking about a network of mysterious tunnels that date back an eye-watering 2,800 years. These aren't your run-of-the-mill channels. They're hewn right into the bedrock and were clearly designed for a specific purpose. But what that purpose was, well, that's the million-dollar question. Forensic tests have ruled out animal slaughter, and these channels weren't exactly built for carrying water either. The experts are leaning towards the idea that these channels were part of the palace or temple economy, given their prime location. They're laid out in two clusters, about 30 feet apart, and don't connect to any known water sources. So, what were they for? Textile manufacturing? Food production? Some sort of religious ritual? Your guess is as good as ours. It's a tantalizing mystery and one that's giving us a fresh, albeit perplexing, glimpse into the complex tapestry of ancient Jerusalem's history. There are many myths and legends about the supposed original occupants of the Hundred Caves of Yoshimi in Japan. Japanese folklore says that this site was once the home of a race called the Koropukuguru, who were said to be dwarf people in the tales of the Ainu people. That was even the theory of Shoguru Tsuboi, who discovered and excavated the caves in 1887. In reality, these curious structures are Kofun period sandstone tombs. The name Hundred Caves doesn't quite do it justice. There are actually 219 burial caves at the site, making this the largest grave cluster in the country. There's little doubt that the caves were intended to be tombs, but there's some controversy about whether they were ever used to bury anybody. No evidence of human remains has ever been found in any of the cave spaces. To make things stranger, the caves are uneven in both size and quality. Some are larger and spacious with ornate decorations, while others are little more than holes in the hillside. The destruction of about a tenth of the entire site during WWII hasn't helped modern-day archaeologists much in their quest to solve the enduring mysteries of this place. Speaking of mysterious and ancient things made from rock, here's the megalithic temple of Malinalco. Most archaeologists of the past have credited the creation of the sprawling temple site to the Aztecs, but there's an increasing belief among experts that Malinalco predates the existence of the Aztec civilization. What we can say with certainty is that the temple and the area around it had a dark reputation in the pre-Hispanic era. The temple is named for Malinalcochitl, the goddess of snakes. She was an Aztec invention, but did the superstition she was based on come from an earlier culture? Perhaps so. The temple, known to locals as Cuauhtinchan, is a monolith of a kind that has no analog in Mesoamerica. The stepped pyramid is carved directly into the cliff face. The main temple is so hard to access that it took two years for archaeologists to reach it after first noticing it in 1933. In many places in and around the temples are examples of rock cutting that left no visible tool marks on the rock. Such technology is beyond the known capabilities of the Aztecs. To be honest, it's beyond the known capabilities of anybody alive at the time. The Aztecs definitely used and adapted this site, but the first versions of these temples might be thousands of years old. Very little is known about Italian mapmaker Urbano Monti. We know that he was born in Milan and that his parents were aristocrats. We presume that he had a very keen interest in travel and geography. If he didn't, he couldn't have come up with the enormous map that he's famous for. A map that displayed knowledge that someone from his time shouldn't have had. The colossal map, made of 60 individual sheets of paper and measuring 27 square feet when fully assembled, has the North Pole at its center, a perspective that nobody else would have used in 1587 when Monti completed his work, and very few people use even today. His idea of Japan is a little off-kilter. It's positioned east to west rather than north to south, and yet it has accurate place names and locations marked on it that no other western map of the era featured. Monti had never been to Japan. We have no idea how he acquired that knowledge, or why he felt so able to draw the Earth as it might appear if he were hovering far above the North Pole when he was making his sketches. Some mysteries hide in plain sight. Mysteries like the core drill holes in ancient Egyptian stone. These aren't your run-of-the-mill holes. These are in hard stones like rose granite, and they've long baffled Egyptologists. Now we've got diamond-encrusted tube drills to make holes like this today, but the dynastic Egyptians didn't. Some scholars reckon they used copper or bronze tube drills with quartz sand as an abrasive, but all attempts to replicate this process have been miserable failures. The plot thickens at Karnak, where a tube drill of massive proportions cut into rose granite like it was butter. Based on the marks it left, the drill that was used was even thinner than what we use today. Fringe theorists credit this work to the Kemeitians, a supposedly superior technological culture that already existed thousands of years before the dynastic Egyptians. Those same fringe theorists also credit the Kemeitians with artifacts like the Sphinx and the Great Pyramid of Giza. There's no evidence that such people ever existed, but then again, there's no evidence that the ancient Egyptians could make drill holes like this either. There's clearly a gap in our knowledge somewhere. Have you ever heard of vimanas? These are the legendary flying machines described in ancient Sanskrit texts like the Mahabharata and the Vedas. Now, I know what you're thinking, flying machines and ancient texts, that makes absolutely no sense, but hear us out. These texts go into astonishing detail, describing crafts that could move in any direction and even vanish from sight completely. Some theories even suggest that the Iron Pillar of Delhi, which has baffled scientists with its rust-resistant qualities, could have been the equivalent of an ancient Tesla coil used to power these vimanas. And get this, there's chatter about vimanas being powered by anti-gravitational technology. Yes, you heard that right. We're talking about flying machines that could defy gravity thousands of years ago. It's as if ancient India was a breeding ground for technology that would make our modern engineers green with envy. So, were vimanas the UFOs of yesteryears, or is that all just another fanciful story cooked up by fringe theorists with too much time on their hands? Probably the latter, but that doesn't explain why the vehicles are referenced in those ancient texts. The Gunderstrup Cauldron is in remarkably good condition for a silver vessel that's been around for around 2,200 years. It's a relic of the Roman Iron Age, and is the largest known example of Iron Age silverwork ever discovered in Europe, with a diameter of 27 inches and a height of 17 inches. The cauldron was in pieces when it was discovered in a peat bog near Gunderstrup, Denmark in 1891, but it has since been lovingly pieced back together. These days, you'll find it inside the National Museum of Denmark in the country's capital city of Copenhagen. The various plates that make up the artifact are decorated with repose work, hammered from behind to push out the silver into the desired shape. Once that was done, the ancient artisan or artisans who worked on the piece added extensive gilding, and even inlaid glass for the eyes of the various figures represented. The style of the Gunderstrup Cauldron isn't typical of the Scandinavian artistry of the era, and may instead be Thracian or Gaulish in origin. To add to the mystery, the scenes on its surface are a mixture of Near Eastern iconography and Celtic myths and legends. Most people nowadays don't believe in magic, but just a few centuries ago, people believed wholeheartedly in the power of magic spells. These tiny inscriptions, engraved onto bits of gold and silver foil and then buried with the deceased in Kostolac, Serbia, show that belief in the power of blessings and curses was far more common in these lands 2,000 years ago. The inscriptions are written in Aramaic, but it looks to be encoded. That's why, since the scrolls were unearthed in 2015, specialists have been struggling to translate the text. Archaeologists discovered them while inspecting a plot of ground set aside for the development of a new power station on land that was previously part of the ancient Roman city of Viminacium. It turns out that the land had previously been used as a burial place, and that everyone buried there was given a lead amulet carrying a little scroll. The names of known demons that have been identified in the text give rise to the possibility that they are magical scrolls. It's unclear why the dead would require the services of a demon, though. Our final mystery was eventually solved, but it took the professionals longer than they'd like to admit. The riddle is the Cardiff Giant, which is now widely regarded as one of the greatest hoaxes in American archaeology's history. It was initially declared to be a real 10-foot tall human body. In October 1869, laborers digging a well behind a farmhouse in Cardiff, New York, discovered the man's apparently petrified remains. However, it wasn't the genuine discovery it appeared to be. It was actually placed there by George Hull, a New York-based tobacconist who had a disagreement with a pastor at his local church concerning the legitimacy of Genesis 6-4's assertions about giants living on Earth. Hull believed that demonstrating the existence of such giants would win the argument, so he hired a sculptor to make the figure, aged it with acid, and hammered it with knitting needles to imitate pores. He then buried it and hired people to dig a well on his property a year later, which is when it was discovered. Hull spent roughly 60,000 pounds on the sculpting, transporting, and other costs associated with briefly seeming to win the debate, which is about as pyrrhic as pyrrhic victories come. We know the ancient Babylonians were exceptionally skilled mathematicians for their era, but could they have been good enough with maths to precisely track and predict the movements of Jupiter, a planet they could barely see? According to interpretations of this cuneiform script tablet, the answer to that question is a That changes our understanding of history significantly. Until the tablet was re-examined, it was thought that the first accurate description of Jupiter's movements wasn't written until the 14th century in Europe. The Babylonian tablet is 1,000 years older than that. The content of the tablets make specific connections between distance, time, and velocity. In this respect, it shows that the Babylonians had a far better understanding of geometry and astronomy than the ancient Greeks of the same era, and perhaps a better understanding of the concept of planetary movement than any other civilization would have for the next millennium. How can they have been so advanced compared to the cultures around them? Speaking of things that were 1,000 years ahead of their time, here's the Pylos Combat Agate. It's a tiny ancient Greek seal stone, barely one inch long, and dates back to the Mycenaean era of Minoan Crete. The beautiful, elegantly carved seal is thought to be the first piece of art from the Aegean Bronze Age and was found inside the famous Griffin Warrior Tomb close to the Palace of Nestor, where it had been for around 3,400 years. Even after so many years, the details of the image carved onto the seal are easy to make out. It features a warrior stabbing his sword through the body of an enemy while stamping on the remains of another man who's crumpled at his feet. What makes it so astonishing is that to create such detail on an object so small, a magnifying glass ought to have been required. No such device dating back to this era has ever been found on Crete, and it's not believed that the concept of magnifying glass existed to Minoans of this era. There are other ancient works of art this small and detailed, but they come from the Classical period, which is a full millennium later. If whoever made this didn't have a magnifying glass, they must have had an incredibly steady hand. The ancient Egyptians prospered through trade and innovation, and their extensive trading network explains how many items from all over the world arrived in Egypt. However, it does not explain how and why traces of nicotine and cocaine have been found in so many ancient Egyptian mummies. One-third of all the mummies at the Egyptian Museum in Munich have been found to contain traces of nicotine. But before you say that the Germans must have contaminated them, traces of nicotine were also found in the stomach of King Ramses II and on the walls of the tomb of Tutankhamun. A very select few ancient mummies even show traces of cocaine in their hair and skin. The problem with all of this is that tobacco and cocaine were unknown to the Western world until Columbus obtained them from the Arawak tribe in 1492 after voyaging to the Americas. How could Egyptians have had access to those same plants 3,000 years ago? Might the Egyptians have sailed as far as America? It sounds like an absurd idea, but scientists can't think of any other way to explain the presence of the exotic substances in the mummies. Many Christian churches all over the world claim to have pieces of the cross that Jesus Christ was crucified upon locked up in their vaults, and most of those claims ought to be treated with skepticism. There's one story about the cross from 2013, though, that might merit closer examination. Archaeologists working inside the ruins of the Balatlar Church in Sinop, Turkey came across a stone chest buried under the lowest reaches of the church. Inside the stone chest was a fragment of wood that head archaeologist Golgin Koroglu immediately identified as a piece of the biblical cross. Her confidence might have been based on the fact that a Christian cross was carved into the side of the chest that the relic was found in. The discovery was the pinnacle of four years of research at the site for Golgin's team, which had already revealed a surprise mass grave containing the remains of more than 1,000 people and ancient frescoes depicting Christ, Mary, and all of the apostles. The church was built somewhere around the year 660, and so if this really is a genuine piece of the cross, a claim that would be almost impossible to prove, someone must have brought it to the church six centuries after the crucifixion is said to have taken place. Shortly after the Second World War, British scientist Carol Robin Evans was contacted by a Polish professor named Lolodow, who claimed to have a bizarre artifact to show him. This strange stone sun disk, said to be 12,000 years old, has since become known as the Lolodow Plate. If we take Professor Lolodow's story at face value, it was acquired from the Zopa people of Mussoorie in northern India, who used it for religious rites. It's the inscriptions on the disk that got Lolodow so excited. Aside from the fact that there's what appears to be a fair representation of a spiral-shaped galaxy, there's also a humanoid figure that looks a lot like the classic depiction of a grey alien. The spiral galaxy shape is consistent with other stone artifacts that have been found elsewhere in India, as well as Peru and ancient Egypt. The UFO enthusiasts among us tell us that this is clear evidence of alien visitation during ancient times, but it's worth bearing in mind that the shape of a spiral was often used to signify energy, in ancient artifacts and carvings. UFO conspiracy theorists often claim inexplicable ancient artifacts as evidence of aliens visiting the human race. They've done the same thing with the strange statuettes and figurines left behind by the mysterious Hongshan culture. We know almost nothing about this ancient civilization other than the fact that they lived during the Neolithic era, and the base of their people was close to the Liao River in China. The only other thing we know about them for sure is that they were tremendously adept at working with jade to make statues. All of the strange figures are humanoid in their basic shape, but there's no way you'd call any of them human. Their actual form is open to interpretation. Some people look at them and see dragons. Others see goats or deer or even horned beasts. One or two of them look slightly like the same classic gray alien we saw on the Lolladoth plate. It's likely that we simply lack the necessary understanding of the Hongshan people to interpret their works of art correctly, but it is odd that the same shapes keep reappearing all over the world. The modern beauty industry makes billions of dollars in revenue each year, and we think of interest in things such as face creams and beauty products as a modern conceit. We're wrong to do that, though, because humans have apparently been trying to beautify themselves for as long as they've been sentient. Here's what appears to be some proof in the shape of a 2,000-year-old tin that was discovered in an ancient Roman temple in London. Because of its location, it was initially assumed to be an ointment used in religious ceremonies, but analysis of its ingredients has since revealed that it contains starch, animal fat, and tin for pigmentation. In other words, it's a humble face cream. The finger marks of the last person to use it are even still visible in the cream's hardened residue. This cream would actually have been better for the wearer than similar products that have been found in Italy. The Roman-made creams of the time used lead instead of tin, but lead wasn't readily available in the British Isles, and so tin was used as a substitute. The pyramids of Egypt might get all the fame from all the visitors, but they're far from being the only notable ancient pyramids in the world. There's also the site of the Pyramids of Sona in the Brasov district of Romania, and they're no less mysterious than the Egyptian variants. From a distance, they look more like hills or grassy mounds than pyramids, but there's nothing natural about the way they were formed. These earthen structures were made by human hands somewhere around 3,000 years ago, and their purpose is unknown. During the early 21st century, a major expedition came here with modern technology in an attempt to discover more about their origin and their purpose, but they were forced to leave almost empty-handed when the pyramids steadfastly refused to give up their secrets. They're geometrically precise in their arrangement, with eight pyramids split into two lines of four at exact intervals, but the secret of their purpose must have died with whichever people built them. The tallest of them, which stands 30 feet high, might have been a burial chamber, but really, that's nothing more than a guess. Ireland is well-known for its ancient and historical artifacts and monuments, but perhaps none of them are as hard to explain or understand as the Ballyshannon Sundisk. This small disk, made of an improbably thin gold foil, is thought to be the oldest example of sheet gold work not just in Ireland, but also in all of the British Isles. When you consider the long history of those islands, that's a remarkable fact. Written records from the date of the discovery of the sundisk in 1669 are frustratingly brief and limited, but they suggest that the disk was found inside the tomb of a man described as having giant stature. That single statement has gone on to feed a whole belief system in Ireland that says literal giants once roamed the land. The Ballyshannon disk is about 4,000 years old, with a cross at the center surrounded by circles and spiral shapes. The term sundisk is a group label that's applied to any object that resembles this. In reality, we don't have the first clue about what its purpose might have been, or even if it was anything more than a simple decoration. There are dozens of places around the world that claim to be connected to the myth of Atlantis. One such place is the dramatically named Giants' Grave of Cotto Vecchio in Arzacina, Italy. Despite their grand name, it's unlikely that the tombs here were built for giants. Instead, it's believed that they're megalithic gallery graves, which were briefly used as public tombs and monuments during the Bronze Age. These particular megaliths were built by the Neuragic civilization, who lived in Sardinia a little over 2,000 years ago and survived until the Experts can't agree on whether the tomb's size meant that they functioned as mass graves, or whether the interior corridors were intended as representations of the soul's journey to the afterlife. The largest single stone slab here is more than 100 feet tall, so it's not surprising that some people prefer to cling to the belief that the graves really were built for giants. The connection to Atlantis comes from a book written by Sergio Frau in 2002, in which he claims that the Neuragic civilization vanished after a tsunami that left behind almost nothing other than these enigmatic stones. Mother Shipton's Cave in Knaresborough, England, with its legendary so-called Petrifying Well, is a wonderful place to visit if you enjoy spectacular sights and tales of the fantastical. The smooth, polished-looking stone formation has long been associated with witchcraft in the local area, and is said to have once been the home of a woman who was both a witch and a prophet. Her name, unsurprisingly, was Mother Shipton. During Tudor times, people genuinely believed her to be clairvoyant, although her prediction that the world would end in 1881 turned out to be way off the mark. People have been visiting her cave since the 17th century to marvel at the well, which is said to have the power to turn people to stone after being cursed by Mother Shipton in one of her final acts. Until modern science came along to spoil the party, the story appeared to be true. Objects left in the well would slowly turn to stone over a period of around three months. Science says that this has more to do with the process of evaporation, coupled with an extremely high mineral concentration inside the well. But who's to say Mother Shipton didn't put the minerals there herself?