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Why is the original purpose of the Kaaba of Zoroaster uncertain?
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Persepolis
Ruins of the royal Achaemenid residence at Persepolis, Iran.
The Kaaba of Zoroaster (Ka'beh-ye Zardusht), a square stone structure located at Naqsh-e Rostam, remains a subject of historical debate because its original purpose is not definitively known.1
While the building dates back to approximately the first half of the 6th century BCE, scholars have not reached a consensus regarding its function. Due to the lack of conclusive evidence, it is hypothesized that the structure may have served as a tomb for Achaemenid royalty or functioned as some form of altar. Although the site contains numerous inscriptions from later periods that provide significant linguistic value, they do not clarify the building's initial intended use.1