Ten Creepy Archaeological Discoveries That Defy Explanation

The Antikythera Mechanism

The Antikythera mechanism is an ancient Greek hand-powered mechanical device widely considered the world's oldest known analog computer. Recovered in 1901 by Greek sponge divers from a sunken Roman-era merchant shipwreck near the Greek island of Antikythera, it is housed in the National Archaeological Museum in Athens, split into 82 bronze fragments. It is operated via a hand crank connected to an intricate system of roughly 30 to 69 bronze gear-wheels. Designed to track celestial cycles, including the positions of the Sun and Moon, lunar phases, and planetary movements. Featured complex back dials—such as the Metonic cycle (19 years) and the Saros cycle—to predict solar and lunar eclipses. Included specialized miniature dials tracking the four-year cycles of Panhellenic games, including the Ancient Olympic Games.

The Nazca Lines

The Nazca Lines in southern Peru are a group of pre-Columbian geoglyphs etched into desert sands. Covering an area of nearly 1,000 sq. kilometers, there are about 300 different figures, including animals and plants. Composed of over 10,000 lines, some of which measure 30 meters wide and stretch more than 9 kilometers, the figures are most visible from the air or nearby hilltops.

The Crystal Skulls

Crystal skulls are human skull hardstone carvings made of clear or milky quartz that were once claimed to be ancient pre-Columbian Mesoamerican or Mayan artifacts. Believers originally claimed the skulls were crafted thousands of years ago by the Aztec, Maya, or Toltec civilizations. A popular modern myth states that 13 ancient crystal skulls exist around the world, and if they are all united, they will unlock universal knowledge. Some spiritualists claim the skulls possess healing properties, emit energy, or act as ancient data recorders linked to Atlantis or extraterrestrials. Scientific examinations using electron microscopes by institutions like the British Museum and the Smithsonian Institution revealed microscopic rotary tool and lapidary marks. Studies show the skulls were carved in the mid-to-late 1800s—likely in German workshops in Idar-Oberstein—using quartz imported from Brazil or Madagascar to cash in on a Victorian craze for ancient artifacts. Not a single famous crystal skull was ever recovered during a documented, scientific archaeological excavation.

Famous Skulls:

• The Mitchell-Hedges Skull: Allegedly found in 1924 by Anna Mitchell-Hedges in Belize, it became one of the most famous and polished specimens, though later tests pointed to modern manufacturing techniques.

• The British Museum Skull: Acquired in the late 19th century and traced through antiquarian Eugène Boban, analysis confirmed it was shaped with modern tools.

• The Smithsonian Skull: Sent anonymously as an alleged Aztec relic, it is displayed as a 19th-century-or-later forgery.

The Voynich Manuscript

The Voynich Manuscript is an illustrated 15th-century codex written in an unknown, undeciphered script known as "Voynichese". Radiocarbon dating places the vellum creation between 1404 and 1438, likely originating in Italy or central Europe. It contains about 240 surviving pages made of calfskin parchment, with many pages featuring foldouts. The book is divided into six thematic sections: herbal, astronomical, balneological (bathing), cosmological, pharmaceutical, and recipes. It is housed at Yale University's Beinecke Rare Book and Manuscript Library. You can browse the entire work digitally through the Internet Archive.

The Baghdad Battery

The Baghdad Battery is a 2,000-year-old artifact from the Parthian or Sasanian period in Iraq that some people claim is an ancient electric battery. It is a small clay pot roughly 14 to 15 centimeters tall with a tube made of sheet copper placed inside the pot and a metal rod suspended in the center, isolated by a plug or seal made of bitumen (an asphalt-like petroleum product). In 1938, Wilhelm König (director of the laboratory at the National Museum of Iraq) suggested the object could function as a galvanic cell (a primitive battery) if filled with an acidic liquid like vinegar, lemon juice, or grape juice. Modern replicas show that putting an acid inside can generate about 0.5 to 1.5 volts of electricity. Some theorists proposed they were used for electroplating (coating metal objects with gold or silver). Most mainstream archaeologists and historians are unconvinced that the vessels were ever meant to be used as batteries.

• No wires or connectors: The iron rod is sealed tightly inside the bitumen with no way to attach external wires to carry a current.

• No supporting records: There are no ancient texts, diagrams, or electrical devices from Mesopotamia mentioning or using electricity.

• Alternative uses: Archaeologists think the pots were likely mundane storage vessels—such as containers for sacred scrolls, papyrus, or ritual items—and that their metal components accidentally mimicked a battery setup.

The Screaming Mummies of Guanajuato

The Screaming Mummies of Guanajuato are naturally preserved human remains on display in Guanajuato, Mexico, famous for their mouths frozen in wide-open, scream-like expressions. In the mid-19th century, a cholera outbreak hit the region, and crowded cemeteries forced temporary above-ground crypt burials. Between 1865 and 1958, families had to pay a perpetual burial tax to keep their relatives resting in the Panteón de Santa Paula. If families failed to pay, the bodies were exhumed. Gravediggers discovered that the region's dry climate, arid soil, and airtight crypts had naturally desiccated and preserved the bodies instead of letting them decompose. Forensic experts and a general consensus on platforms like Reddit note that the open mouths are caused by natural post-mortem muscle relaxation and decay—not because the individuals were buried alive, though local legends often claim otherwise. They are housed in the Museo de las Momias de Guanajuato, located near the old municipal pantheon. Out of over 100 bodies in the collection, dozens of preserved men, women, and children are publicly exhibited in glass cases. The collection includes Dr. Remigio Leroy (the oldest mummy from 1860) and bodies with preserved hair, teeth, and clothing.

The Gobekli Tepe Megaliths

Göbekli Tepe is an ancient archaeological site in southeastern Turkey that features the world's oldest known monumental megalithic architecture. Located in the Germuş mountains, about 20 km northeast of Şanlıurfa, Turkey (Upper Mesopotamia). Built around 9,600 to 8,000 BCE (roughly 11,500 to 11,600 years ago) during the Pre-Pottery Neolithic age. Constructed by hunter-gatherer communities before the widespread adoption of agriculture, pottery, or metal tools. Massive T-shaped limestone pillars up to 5.5 meters tall and weighing between 10 and 50 metric tons, arranged in monumental circular or oval enclosures. Pillars feature intricate low- and high-relief carvings of wild animals (such as foxes, boars, snakes, and vultures) alongside stylized human arms, hands, belts, and loincloths. The site upended traditional archaeological timelines by demonstrating that complex social organization, ritual architecture, and large-scale cooperative labor existed before the rise of permanent farming villages. Named a UNESCO World Heritage Site in 2018.

The Roman Dodecahedrons

A Roman dodecahedron (or Gallo-Roman dodecahedron) is a small, hollow, 12-sided geometric object made of a copper alloy (bronze) that dates from the 2nd to the 4th centuries AD.

Physical Characteristics:

• Shape: 12 flat, equal pentagonal faces.

• Openings: Each face has a circular hole of a varying diameter in the middle, connected to the hollow center.

• Knobs: Small, spherical projections (knobs) sit at each corner (vertex) of the pentagons.

• Size & Distribution: They range from about the size of a golf ball to larger pieces. Over 130 examples have been discovered—primarily in the northwestern provinces of the former Roman Empire (such as modern-day France, Germany, Belgium, and Britain) and notably absent from Italy and the Mediterranean.

• Markings: They feature no letters, numbers, maker's stamps, or official inscriptions.

The Piri Reis Map

The Piri Reis Map is a pre-modern world map compiled in 1513 by the Ottoman admiral and cartographer Piri Reis. Drawn on gazelle skin parchment in 1513 and presented to Ottoman Sultan Selim I in 1517. Only about one-third of the original map survives today. It is housed in the Topkapı Palace Museum in Istanbul, Turkey. Found in 1929 by theologian Gustav Adolf Deissmann and director Halil Edhem during cataloging work. Piri Reis noted that he synthesized roughly 20 source charts, including 8 Ptolemaic maps, Portuguese sea charts, an Arabic map of India, and a lost map drawn by Christopher Columbus. It was inscribed in the UNESCO Memory of the World Register in 2016.

Content & Controversies:

• New World Depiction: It is one of the earliest surviving maps to accurately show the western coast of Africa, the eastern coast of South America, and parts of the Caribbean.

• The Antarctica Debate: Some alternative history theories claim the southern extension of the map depicts an ice-free Antarctica centuries before its official discovery. However, opinions on this are mixed: mainstream historians and cartographic analysts suggest the landmass is actually a continuation or distorted depiction of the South American coastline. On Reddit, users have mixed opinions regarding whether the landform represents Antarctica or a stylistic curve of South America.

The “Alien” Atacama Skeleton

The “Atacama skeleton” (nicknamed Ata) is a 6-inch (15 cm) mummified human infant rather than an extraterrestrial. Discovered in 2003 by Oscar Muñoz in La Noria, an abandoned nitrate-mining town in Chile’s Atacama Desert. The tiny skeleton features an elongated, cone-shaped skull, wide eye sockets, and only 10 pairs of ribs instead of the typical 12. Due to its bizarre proportions and small size, it was traded on the black market and claimed by UFO proponents (such as Steven Greer) to be an alien. Whole-genome sequencing led by researchers at Stanford University and UCSF proved that Ata is a human female of Chilean ancestry, dating back roughly 40 to 50 years (likely a premature stillbirth or infant). Genetic analysis identified a cluster of rare mutations across seven genes responsible for bone development, joint formation, and cranial growth. These mutations caused severe skeletal dysplasia, dwarfism, and premature bone hardening. Researchers noted that high exposure to local nitrates or saltpeter in the mining town of La Noria may have contributed to the severe developmental malformations.