Infrastructure · Evidence-led place record
ESCA
Japan
A coordinate-backed underground city record.
CategoryUNDERGROUND CITY
LocationJapan
DatasetExpanded physical oddities
Oddness signal88/99
Data completeness65%
The oddity, explained
Why is ESCA unusual?
ESCA appears here because the approved source classifies it as infrastructure. The source describes it as A coordinate-backed underground city record. Heritage Atlas treats that specific classification-and-description combination as the oddity; the score is a comparative discovery signal, not proof of mystery or the supernatural.
Evidence and further exploration
The coordinate, category and description remain tied to the cited source. Comparative oddness helps discovery; it does not add facts that the source does not provide.
Inspect the original evidence source ↗