Was a lost technology utilized in carving the rock hewn structures of Saudi Arabia?

[@Lizziekarendreams]

Fabulous episode, thank you.

[@AncientHypotheses]

Thanks so much!

[@theplastolithicpast8257]

Great presentation. Thanks!

[@AncientHypotheses]

Thank you ! Appreciate it!

[@andymccracken4046]

The staircase pattern on the the exterior of the upper sections is similar to some South American work.