This Halacha is an excerpt from our Sefer
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The bush shaped rocks of the Sinai mountain?
Some Poskim record that the reason that the mountain is called Sinai is because the word Sneh means bush. The reason why this mountain is called “bush” is because the rocks of this mountain contain a natural phenomenon, no less than a miracle, in that every piece of its rock contains the picture of a bush. No matter how many times one breaks a piece of its rock he will see a form of a complete bush within the rock.
 Yaavetz in Migdal Oz p. 240