Photo by Mushki Brichta: “A granite stone from the area of mount Sinai showing what seems to be a depiction of a bush, created naturally by a concentration of manganese oxide which forms into this shape in the rock.”
[CC BY-SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0)], from Wikimedia Commons. (https://commons.wikimedia.org/wiki/File:Stones_of_Sinai.jpg)
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