CodexMira
DeepEarlyNeolithicBronze AgeIron Age and ClassicalMedievalEarlyModern

Yonaguni Monument

SubmergedContested

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Stepped underwater rock terraces. Most geologists see a natural formation; some argue for human shaping.

ContinentAsiaConfidence: disputed
MaterialSandstoneMohs 6-7 (mineral hardness scale)

Claims

FieldConsensusAlternative
Date

Natural sandstone formation, not a structure

Robert Schoch, geological assessment

Human-shaped monument 5,000 to 10,000 years old

Masaaki Kimura • University of the Ryukyus research
Purpose

None

Robert Schoch, geological assessment

Human-shaped monument 5,000 to 10,000 years old

Masaaki Kimura • University of the Ryukyus research
MethodNo claims found.

Human-shaped monument 5,000 to 10,000 years old

Masaaki Kimura • University of the Ryukyus research
Sources: Robert Schoch, geological assessment • University of the Ryukyus research

No published date is available for this wonder; showing all ages.

DeepEarlyNeolithicBronze AgeIron Age and ClassicalMedievalEarlyModernDates supported by mainstream archaeology. Natural formations remain undated.Timeline
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