Tower of Silence


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A Tower of Silence is a circular, raised structure used by Zoroastrians for exposure of the dead, particularly to scavenging birds for the purposes of excarnation.
Zoroastrian exposure of the dead is first attested in the mid-5th century BCE Histories of Herodotus, but the use of towers is first documented in the early 9th century. The doctrinal rationale for exposure is to avoid contact with earth or fire, both of which are considered sacred.