<https://forum.davidicke.com/index.php?/topic/16226-the-great-pyramids-of-giza-are-made-of-concrete/#comment-227881>
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"yes i don't believe the granite blocks above the kings chamber were built for structural strength. I believe they were crystalline for RESONANCE\n \n"
<https://forum.davidicke.com/index.php?/topic/16226-the-great-pyramids-of-giza-are-made-of-concrete/&tab=comments#comment-214760>