Ancient Civilizations & Origins · Evidence Files
What the ancient world still refuses to settle
The evidence files index: the ancient world's unresolved questions, each one opened with what the record supports, what it does not, and what would settle it.
- Files
- 15
- Competing claims
- 38
- Open questions
- 30
How strong the record is across this collection
- 1 Documented Historical Record
- 7 Archaeological Evidence
- 6 Active Academic Debate
- 1 Speculative Theory
A file being open is not a licence to speculate. Every competing claim is ranked by the evidence behind it, and the weak ones are labelled weak.
Attested in primary written sources that historians treat as reliable for this claim.
Supported by excavated material: stratigraphy, artifacts, dating, or site survey.
The mainstream position across the relevant scientific literature today.
Specialists disagree. Competing interpretations are presented side by side.
Second City Standard's own reading of the evidence, labeled as such.
Proposed but unsupported by accepted evidence. Reported, never endorsed.
File 01 · Şanlıurfa, Turkey · c. 9500 – 8000 BCE
Göbekli Tepe
Did monumental construction precede agriculture — and if so, what does that do to the standard model of civilization?
File 02 · Giza, Egypt · c. 2560 BCE
Great Pyramid
How was a 2.3-million-block monument organized, supplied, and raised in roughly two decades?
File 03 · Giza, Egypt · c. 2500 BCE (consensus)
Great Sphinx
When was the Sphinx carved, and what caused the weathering on its enclosure walls?
File 04 · Wiltshire, England · c. 3000 – 1500 BCE
Stonehenge
Why were bluestones moved 150 miles, and what was the monument for?
File 05 · Nazca Desert, Peru · c. 500 BCE – 500 CE
Nazca Lines
What were geoglyphs meant to do for people who could not see them from above?
File 06 · Textual · Described c. 360 BCE
Atlantis
Is there any evidentiary basis for Atlantis beyond two Platonic dialogues?
File 07 · North Sea · c. 18,000 – 6,000 BCE
Doggerland
How much human history is sitting under post-glacial sea level rise?
File 08 · Eastern Mediterranean · c. 1200 – 1150 BCE
Sea Peoples
Who were the Sea Peoples, and were they a cause of collapse or a symptom of it?
File 09 · Eastern Mediterranean · c. 1200 – 1150 BCE
Bronze Age Collapse
Why did an interconnected system of empires fail within roughly fifty years?
File 10 · Aegean Sea · c. 150 – 100 BCE
Antikythera Mechanism
How advanced was Greek gearing, and why is there nothing else like it?
File 11 · Khujut Rabu, Iraq · c. 250 BCE – 250 CE
Baghdad Battery
Were these jars electrochemical cells, or storage vessels misread by modern expectations?
File 12 · Tiwanaku, Bolivia · c. 536 – 600 CE
Puma Punku
How were interlocking andesite blocks cut to such tolerance without iron tools?
File 13 · Okinawa, Japan · Disputed
Yonaguni Monument
Is the Yonaguni formation carved, natural, or natural rock modified by people?
File 14 · Rapa Nui, Pacific · c. 1200 – 1600 CE
Easter Island
Did Rapa Nui society collapse from self-inflicted ecological failure, or is that narrative wrong?
File 15 · Central Europe · c. 1404 – 1438 (vellum)
Voynich Manuscript
Is the Voynich text a real language, a cipher, or an elaborate fabrication?