This footprint captures the moment, over four thousand years ago, when someone stepped barefoot on a mud brick left to dry in the sun, 2000 BC, Ur (Iraq).
How does nature even create this? A perfect, solidified oil slick rainbow on dark, sharp crystals. Mind-blowing!
#NaturalWonder #GeologyQuestions #CrystalFormation #Iridescent #AmazingNature