This is an ancient digging tool. Phillip should have laid his pick down by it so you could tell what the size was in comparison to it.
I guess I should have put the site of this fire pit picture in first. Anyway this old Indian fire pit was almost covered with rocks, roots and erosion. Phillip dug into it to see what might be in it. The charcoal was still perfectly preserved in the bentonite. Biggest portion of the silt in this canyon is bentonite. In the market, pure bentonite is silica gel. It is used to dry flowers in, and to put in oil wells to seal them. The less pure stuff is used to seal ditches and ponds.
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