Chakana Incan cross in the Sacred Plaza. The stone half cross is meant to be completed by its shadow. 
A traditional Incan symbol, the tierd cross resembles a series of steps representing the three le
Chakana Incan cross in the Sacred Plaza. The stone half cross is meant to be completed by its shadow. A traditional Incan symbol, the tierd cross resembles a series of steps representing the three… © McKay Savage from London, UK, CC BY 2.0, via Wikimedia Commons

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