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White Oak Over the Mackinaw River

White Oak Over the Mackinaw River

Merwin Savanna Nature Preserve, Illinois

This white oak tree is at the very edge of the steep river bluff. The meandering Mackinaw River changes direction just below the bluff, which forms the foundation for the tree, on the outside of a curve. One day the balance may shift in favor of gravity, as the river erodes the base of the bluff, and the oak may fall. Photo by J.A. Lerczak.