Chichen Itza Site-Emblem T-Shirt, Mexico

The stepped-pyramid silhouette of El Castillo with its carved serpent head at the staircase base, printed alongside the geometry diagram Pyramason actually tested against the site's tightly clustered temple core: the one flagship site where our golden-ratio test came back nominally significant, caveats included. Beneath it: Chichen Itza, Mexico, 20.683056, -88.568611. Those are Pyramason's own catalogued coordinates for the staircase that grows a serpent twice a year.

• Stepped-pyramid silhouette with carved serpent head, instantly identifiable even without colour
• Geometry diagram shows Pyramason's real test result: our one nominally significant finding, honestly caveated
• Exact coordinates (20.683056, -88.568611) printed beneath the monument and country
• Soft, pre-shrunk cotton in a minimalist gold-on-dark line-art treatment

Why this site. Chichen Itza's El Castillo is a working piece of solar architecture, still casting its equinox serpent-shadow illusion roughly 900 years after it was built. It's also the one site in Pyramason's catalogue where our golden-ratio engine returned a nominally significant result, and the shirt carries the honest caveat that comes with it, not a mystical overclaim.

Chichen Itza · Mexico · 20°40'59.0"N 88°34'07.0"W