Panoias Sanctuary
Rock-CutEuropePortugalc. 300 BCEPre-Roman Lusitanian then Roman
Pre-Roman and Roman rock-cut religious sanctuary in northern Portugal. Three large granite outcrops carved with basins, channels, and steps, with Latin inscriptions identifying them as dedicated to Serapis and the dii Severi. Continuous use 4th century BCE through 3rd century CE.
Look Closer — this site carries open questions: stone harder than steel; geometry beyond period explanation.
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