Fascinating find from a sealed cave in Mexico: crystal skulls, elongated skull artifacts, and handbag-shaped objects alongside a ~3-foot artifact glowing green under UV light. The stone-like objects are actually a synthetic polymer of aluminum silicate and alumina heated to ~4,500°F. Three dating methods converge on roughly 17,000 years old. Wild!
Sealed cave in Mexico yields crystal skulls and polymer artifacts dated to ~17,000 yearsancient_astronauts

Key facts
- Artifacts recovered from a sealed cave in Mexico include crystal skulls, cone-head skulls, and handbag-shaped objects
- The artifacts appear stone-like but are a synthetic polymer composed of aluminum silicate and alumina, heated to approximately 4,500 degrees Fahrenheit at an exact percentage composition
- Three independent dating methods have been applied: thermoluminescence on embedded adhesive, and carbon dating of trapped organic material within the polymer, plus analysis of the polymer itself
- Dating results from the site have produced dates around 17,000 years
- One artifact approximately 3 feet tall was found sticking out of bedrock, surrounded by crystal skulls and red ants that did not bite the excavation team
- The artifact glows green under UV light while surrounding bedrock does not
- The cave entrance featured a primitive concrete archway and block wall that concealed a cavity opening approximately 10 feet back
- Iconography on the artifacts includes non-human figures, elongated skulls, and what is described as possibly Toltec-style sculpture with removable helmets revealing non-human heads underneath
- The lead researchers believe the site may function as a Valley of the Kings for Mexico due to ritually placed objects and a tunnel system lined with white concrete
Sources
(PDF) Legend of the Crystal Skulls - ResearchGateresearchgate.net
Today institutions like the British Museum exhibits skulls as examples of fakes, while other institutions still present them as the genuine pre-Colombian ...
Crystal Skulls Information, Legends - National Geographicnationalgeographic.com
This specimen, owned by the British Museum in London, was originally thought to have been made by the Aztec of Mexico but was later determined to be a fake.
April Fakes: The British Museum Crystal Skull | TORCHtorch.ox.ac.uk
The British Museum crystal skull is an illuminating case study with regard to the intersection of European archaeology, colonialism, exoticism, ...
Crystal Skulls Deemed Fake - C&EN - American Chemical Societycen.acs.org
Researchers looked at the surface of this real pre-Columbian artifact to help determine that the crystal skulls were frauds. these peculiar ...
Legend of the Crystal Skulls - Archaeology Magazine Archivearchive.archaeology.org
I believe that all of the smaller crystal skulls that constitute the first generation of fakes were made in Mexico around the time they were sold, between 1856 ...
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