Nature Study Outing – Week 20



Catching up today with last week’s nature study outing, as I have a question for nature-loving readers.  This time we spent a very warm and sunny morning at a county park about five miles outside of town.  As far as county parks go, this one was tiny–just four acres!  But besides having little rock coves and a creek to explore, it also provided a history lesson: we were able to see rock mortars and petroglyphs from the Ohlone Indians, dating back thousands of years.  Very neat.

And my question: in one area, the exposed tree roots had these strange spirals.  Are these just lovely carvings, or does this happen naturally?  And if so, from what?


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