After paddling up the canal, I observe a sample of the limestone base that underlies the Everglades.
It is pitted from the acid in the swamp water, due to the tannin from the mangrove trees.
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| canal_20.JPG After paddling up the canal, I observe a sample of the limestone base that underlies the Everglades. It is pitted from the acid in the swamp water, due to the tannin from the mangrove trees. |